I was reading my favorite novel.

A) was

B) was reading

C) reading

D) novel

Security might close the main gate.

A) Security

B) might

C) close

D) might close

They must go to New York to attend the meeting.

A) must go

B) must

C) go

D) attend

George has appeared as an actor on screen.

A) has

B) appeared

C) has appeared

D) actor

You should shake the bottle before using it.

A) should shake

B) should

C) shake

D) bottle

We might have been doing the experiment wrong.

A) might have been

B) have been

C) might

D) might have been doing

Chris hasn’t approved my business proposal.

A) hasn’t

B) hasn’t approved

C) approved

D) business proposal

The employees are not trying hard to finish the target.

A) are not

B) trying

C) are not trying

D) finish the target

Meghan is writing a thriller story.

A) is

B) writing

C) is writing

D) story

I think you should not stay in this house.

A) should not

B) should not stay

C) stay

D) house