In the following two hours he was _____ the performance, because it turned out to be as wonderful as he had expected.

A. tired of　　　　 B. absorbed in　　 C. annoyed with　　 　 D. concerned about

Every minute of the day is______ urgent matters.

This button is for _______ (调整) the volume.

The sale usually takes place outside the house, with the audience ______ on benches, chairs or boxes.

A. having seated　 　B. seated　　 　　C. seating　　 　　 D. having been seated

The Dragon Boat Festival had its____as an event in memory of Qu Yuan, a great poet in China.

A．reason 　 B．explanation 　 C．origin　　 D．resource

You can’t imagine what great trouble they have _____ the problem _____.

A. to solve; being talked about      　　　 B. solving; discussing

C. to solve; to talk about   　　　　　    D. solving; being discussed

Doctors are doing research to find out what happens physically when people

_____ smoking..

A. quit　　　　　　　 B. decline　　　　　 C. depart　　　　　 D. reserve

Jim talked for about half an hour yesterday. Never＿＿ him talk so much.
A. I heard              B. did I hear            C. I had heard          D. had I heard

Dinosaurs have been extinct from the earth, never ____________ again.
A. seen         B. being seen        C. to be seen       D. having been seen

He will _____ one minute to decide which answer _____.

A. be given; be chosen 　 B. give; be chosen

C. be given; to choose 　 D. give; choose