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The ability________ an idea is as important as the idea itself.

A．expressing 

B．expressed

C．to express 

D．to be expressed

The difference in thickness and weight from the earlier version makes the iPad 2 more comfortable ________.

A．held           

B．holding

C．be held       

D．to hold

If they win the final tonight, the team are going to tour around the city________ by their enthusiastic supporters.

A. being cheered                 

B. be cheered

C. to be cheered                 

D. were cheered

Passengers are permitted ________ only one piece of hand luggage onto the plane.

A．to carry         

B．carrying

C．to be carried      

D．being carried

Tom asked the candy makers if they could make the chocolate easier ________ into small pieces.

A．break  　　　　　　　　　     

B．breaking  

C．broken      

D．to break

My headache ________ me. I thought it was going away, but now it's getting worse and worse.

A．is killing 

B．was killing

C．kills 

D．killed

—Look! What a mistake! Why?

—Sorry, I ________ on it.

A．don't concentrate

B．hadn't concentrated

C．haven't been concentrating

D．wasn't concentrating

—Bob has gone to California, I hear.

—Oh, I wonder when he ________.

A．has left 

B．was leaving

C．left 

D．leaves

The couple finally bought the house they wanted, for they ________ enough money.

A．had saved 

B．were saving

C．would save 

D．were to save

—Have you ever visited the Opera House?

—Yes. When I was in Sydney, I ________ it twice.

A．have visited 

B．visited

C．had visited 

D．would visit