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The police are looking for a missing boy, who is believed ________ a white pullover and blue jeans.

A．wearing 

B．to be wearing

C．to wear 

D．having worn

The young man, ________ several attempts to beat the world record in high jumping, decided to have another try.

A．to make 

B．making

C．made 

D．having made

Some people try to knock me down, only ________ me more determined to do better.

A．to make 

B．makes

C．having made 

D．made

Nowadays many people keep on the move, ________ there to be better­paid jobs.

A．to hope 

B．hoping

C．expecting 

D．to expect

________ global temperatures rising, the UN Climate Change Conference was held in Cancun 坎昆 ，Mexico last year.

A．Prevented 

B．Preventing

C．Having prevented 

D．To prevent

________ at the party, we saw Ruth standing alone in the corner of the hall.

A．Arriving 

B．To arrive

C．Arrive 

D．Arrived

Always remember that your own decision ________ is more important than anything else.

A．to succeed 

B．succeeding

C．having succeeded 

D．succeeded

—Can you hand in your composition tomorrow?

—Sure. ________ it handed in on time, I'll stay up tonight.

A．To have got 

B．Having got

C．Getting 

D．To get

The young man lay on the sofa with his arms ________ and soon fell asleep.

A．folded 

B．folding

C．being folded 

D．to fold

A terrible air crash happened over the Atlantic Ocean, ________ 150 passengers.

A．killing 

B．having killed

C．killed 

D．to kill