She wrote a month ago, ______ we’ve heard nothing.

A. since when B. before whichC. since thatD. after which

George could not speak Italian so he ???? an Italian girl to work as an interpreter.

A .hired?????? B . accompanied??? C .instructed?????? D .directed

Have you ever stopped _____ how our lie _____ if the world ran out of ol?

A.to think, would change    B. thinking, would change

C. to think, will change   D. thinking, should change

—_____ that he picked up French?

—It was in 2010_____ he traveled in France.

A. Was it when; that?????????????????? B. When was it; that

C. Was it when; when????????????????? D. When was it; when

For some time the expert __________ people of the health risks caused by passive smoking. He???? says he won't stop until all the smokers around him decide to quit smoking.

A. is warnedB. is warningC. has been warningD. has been warned

Tom raised his hands???? to say something, but he remained silent in the end.

A. even if?????? B. as if???? C. so that???? D. now that

________ operation was very successful indeed，which was ________ comfort to the concerned mother.

A．The；/? B．An；the

C．An；a? D．The；a

—Could you help me with the math problem?

—________ Your must be barking up the wrong tree.

A．A pleasure.? B．Hang on a minute.

C．What’s the point?? D．Are you kidding?

Drunk driving used to occur ________ in our city，but now such cases are rare.

A．practically? B．generally

C．frequently? D．gradually

Having failed to do what I ________ to，I’m afraid of being scolded by my parents.

A．am expected? B．will be expected

C．was expected? D．have expected