Choose the best answer A, B, C or D to complete the sentences.

That’s the doctor for ................ Cliff works.

A. that

B. which

C. whom

D. whose

Choose the best answer A, B, C or D to complete the sentences.

That’s my friend, ................ comes from Japan.

A. which

B. who

C. whom

D. where

Choose the best answer A, B, C or D to complete the sentences.

The plants which ................ in the living room need a lot of water.

A. are

B. be

C. is

D. was

Choose the best answer A, B, C, or D to complete the sentences.

Teachers provide a model for children to _________.

A. allow

B. behave

C. change

D. imitate

Choose the best answer A, B, C or D to complete the sentences.

In July of 1975, the first US-Soviet joint ……… occurred with the Apollo-Soyuz project.

A.mission

B.performance

C.company

D.relation

Choose the best answer A, B, C or D to complete the sentences.

Aircraft flying in …….. arcs create microgravity for tests and simulations that last 20-25seconds.

A.circular

B.parabolic

C.straight

D.oval

Choose the best answer A, B, C or D to complete the sentences.

Yuri Gagarin became the first person to eat and drink in …………

A.weightless

B.gravity

C.specific gravity    

D.microgravity

Choose the best answer A, B, C, or D to complete the sentences.

Peter can just get ____________ in German.

A. up

B. down

C. out

D. by

Choose the best answer A, B, C or D to complete the sentences.

I passed all my exams - I’m …………!

A.over the moon

B.once in a blue moon

C.out of this world

D.the sky’s the limit