GRAMMAR: Choose the correct item.
Khaliun and I have been friends ……..10 years.
A. for
B. in
C. since
D. until
Read the text and answer the questions.
Geometry is the study of two-dimensional shapes, three-dimensional figures and all the various positions, combinations, sizes and shapes they can have. Geometry deals with a sense of space. It requires people to reason and problem-solve. Geometry is found in everyday life, especially in art, science, architecture, sports and more. Ancient Greek named Euclid is known as the Father of Geometry. Much of the geometry studied by students is based on his ideas. His ideas are very important for further geometrical studies in high school and college.
There are many important mathematical terms to know to be successful in geometry. A ray is part of a line. It has only one endpoint, and it extends forever in one direction. A line is a straight path of points that continues on forever in two directions.
Lines are called different things depending on their position in relationship to other lines. Two lines are parallel to each other when they stay the same distance apart and never cross. Two lines are perpendicular to each other when they cross to form four right angles. Two lines are intersecting lines when one line crosses the other, and they share a point.
Who is called the Father of Geometry?
Where is geometry found?
What is the main difference between a ray and a line?
How do you know if two lines are parallel to each other?
What is a line?
GRAMMAR: Choose the correct item.
My brother has ……..flown in a plane. This will be his first time.
A. never
B. ever
C. already
D. yet
GRAMMAR: Choose the correct item.
My sister has ……..flown in a plane. This will be her third time.
A. never
B. ever
C. already
D. yet
GRAMMAR: Choose the correct item.
Where……..on holiday last year?
A. have you gone
B. did you go
C. you went
D. you gone
GRAMMAR: Choose the correct item.
Where……..on holidaylast year?
A. has she gone
B. did she go
C. she went
D. she gone
GRAMMAR: Choose the correct item.
Have you ever ……..a camel? It’s quite experience!
A. ride
B. rides
C. rode
D. ridden
GRAMMAR: Choose the correct item.
Has she ever…….. a camel? It’s quite experience!
A. ride
B. rides
C. rode
D. ridden
GRAMMAR: Choose the correct item.
It was ……..heavily when the two cars crashed.
A. raining
B. rained
C. rains
D. rain
GRAMMAR: Choose the correct item.
She was walking home when it ……..to rain.
A. started
B. was starting
C. starts
D. start
GRAMMAR: Choose the correct item.
If I don’t study hard, I ……. pass the exam well.
A. don’t
B. will
C. won’t
D. didn’t
GRAMMAR: Choose the correct item.
If my sister ……..study hard, she won’t pass her exam well.
A. doesn’t
B. won’t
C. didn’t
D. will
GRAMMAR: Choose the correct item.
If we cut down all trees, the climate ……. be changed too much.
A. won’t
B. will
C. don’t
D. doesn’t
GRAMMAR: Choose the correct item.
If we …….. all trees, the climate will change too much.
A. cut down
B. cuts down
C. will cut down
D. don’t cut down
GRAMMAR: Choose the correct item.
If you …….salt onto the snow, the snow melts.
A. throws
B. will throw
C. throw
D. threw
GRAMMAR: Choose the correct item.
If you throw salt onto the snow, the snow……..
A. melts
B. will melt
C. melt
D. melted
GRAMMAR: Choose the correct item.
If you …….. that oven, you will burn your fingers.
A. touches
B. touch
C. will touch
D. touched
GRAMMAR: Choose the correct item.
Two teenagers …….. in a car accident last night.
A. was injured
B. were injured
C. are injured
D. is injured
GRAMMAR: Choose the correct item.
A. teenager ……..in a car accident last night.
A. was injured
B. were injured
C. are injured
D. is injured
GRAMMAR: Choose the correct item.
The cows …….. once a day.
A. milk
B. milked
C. is milked
D. are milked