It's time ___about the traffic problem downtown

1. It's time ___about the traffic problem downtown.

A.something was done         

B.everything is done         

C.anything will be done      

D.nothing to be done         

.標(biāo)準(zhǔn)答案：A

2. His name was ______ of my tongue, but I just couldn't remember it.

A.at the end                 

B.at the top                 

C.on the tip                 

D.on the point               

.標(biāo)準(zhǔn)答案：C

3. ________ you return those books to the library immediately, you will have to pay a fine.

A.Until        

B.Unless       

C.If           

D.Providing    

.標(biāo)準(zhǔn)答案：B