—Is your father still an engineer?

—_______.

A.Yes, he was　　　　　　　 　 B.He didn’t use to

C.Yes, but he used to　　　　　D.No, but he used to be

President Obama plans to adopt a new approach in the Middle East, ________ is not to simply tell people ________to do, but rather to listen to their ideas.

　 A. that; which　　　 B. what; how　　　 C. which; what　　　 D. where; what

Alcohol is classified as a downer，and although it is legal，it can damage the liver and do great harm if________in large quantities.

A．consume 　　　B．to consume　　　　 C．consuming 　　　 D．consumed

— Are you satisfied with what she has done?

　 　 — Not in the least．It couldn’t be __________.

　 A．any worse　 　 B．any better　 C．so bad　 D．so good

We all know that science plays ______ in modern society.
  A. an important role    B. important role
  C. important roles     D. important parts

I often see lights in that empty house.Do you think I　　 report it to the police?

A、should　　 B、may　　 C、will　　 D、can

The doctor i__________that Mum be operated at once and we followed him.?

I felt somewhat sad and was about to leave ____ something happened which drew my attention.

A. unless　　　　 B. until　　　　 C. when　　　　　　 D. while

----Where is Mary?　

----At ____.

A. Mr. Brown's　 B. the Browns　 C. Mr. Browns 　D. the Mr. Browns'

________ the visitors around the school, we took them to the library building.

A. Have shown　　 B. Shown　　　　 C. Having shown　 D. To show