I don’t think it is __________taking the trouble to explain the question to him.

A. worth     B. worthy      C. worth of     D. worthwhile

In the past few years, so many areas throughout the world have been hit by such destructive earthquakes, snowstorms and tsunamis ________ we have never experienced before, ________ makes us worried a lot about nature disasters.

A. that; that     B. as; which      C. which; it     D. when; as

Would you please keep silent? The weather report ________  and I want to listen to it.

A. is broadcast   B. has been broadcast   C. is being broadcast   D. had been broadcast

According to the statistics，young drivers are more ________to have accidents than older drivers.

A．likely        B．curious     C．probable     D．possible

The USA and some other countries helped the rebels in Libya ____________ their promise to support democracy (????) and fair trade.

A. in danger of    B. in memory of    C. in peace for   D. in return for

—I had been working till 4 a. m.to prepare a report for my boss.

—____________you look very tired.

A．No doubt     B．No hurry     C．No wonder    D．No need

I am one of the students who _________ English well in my class but he is the only one of us __________ maths well.

   A. studies; learns    B. study; learns   C. study; learn    D. studies; learn

The old teacher lay wide awake on his bed, ___________ all the problems he had to deal with the next day.

   A. thought about    B. to think about    C. thinking about    D. having thought about

____________ scientists will be invited to take part in this space flight.

A. Two strong young Chinese               B. Two Chinese strong young

C. Chinese two young strong               D. Young strong two Chinese

When he was doing the software development project, he ___________ many problems that he had to solve on his own.

   A. came up with      B. came through       C. came across       D. came out