全新版第二版综合B4U1(10)

41.

They are currently _________ in lengthy trade negotiations.

A) engaged

B) busy

C) obliged

D) occupied

正确答案： A

42.

At the first _______ of twelve all the workers in the factory stopped for lunch.

A) strike

B) bell

C) stroke

D) hit

正确答案： C

43.

A solar day is the length of time _______ the Earth to revolve once around the Sun.

A) takes

B) takes it

C) it takes

D) one takes

正确答案： C

44.

He obviously displays a great ______ for some of your poems.

A) consent

B) admiration

C) respect

D) pleasure

正确答案： B

45.

The teachers ______ themselves with planning out the work of the coming semester.

A) employed

B) involved

C) occupied

D) engaged