—Look! Here is a message on my mobile phone, asking me to send money to....

—Don’t believe it! It’s a trick. More than one person _____ by such tricks so far.

A．had been cheated   B．was cheated       C．have been cheated  D．has been cheated

Although Fleming discovered Penicillin, it was over a decade ______ someone else turned it into the great drug of the 20^th century.

A．before           B．since             C．when             D．as

I called Bruce many times yesterday, but I couldn’t get through. His brother ____ on the phone all the time.

A．was to talk         B．was talking         C．would be talking    D．had talked

It is reported that in our country cities ________ heavy air pollution that is 30 percent above the national standard or higher should try to meet standards by 2030.

A．suffering          B．suffer            C．suffered          D．are suffering

Tourists are now coming to Ping’an village in large numbers, ___________ they would never have stopped, had it not been Mo Yan’s hometown.

A．when            B．where            C．that              D．which

—Why don’t you wear your jogging shorts, mum?

—Well, my legs are too skinny, if you ______ know.

A．must             B．can              C．may              D．need

Hardly _______ to speak when the audience interrupted him.

A．he began          B．he had begun      C．had he begun      D．did he begin

Whatever amount you decided to ______, be certain that the money will be put to good use.

A．exchange         B．calculate          C．donate           D．distribute

 If we had become aware of danger earlier, we _____ to stay in that temporary shelter.

A．wouldn’t choose                      B．wouldn’t be choosing

C．wouldn’t have been choosing             D．wouldn’t have chosen