19.-I have heard Tom had an accident while he was riding to school yesterday.
-_____?He is always careful when riding.( )
-_____?He is always careful when riding.( )
| A. | How come | B. | What for | C. | Why not | D. | So what |
17.--Which dress do you like best,Madam?
--Sorry,I can't decide now.( )
--Sorry,I can't decide now.( )
| A. | to buy which one | B. | buy which one | ||
| C. | which one to buy | D. | which I should buy it |
16.-Could you tell me _________?
-I'm not sure.( )
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-I'm not sure.( )
| A. | how many people have been out of hospital | |
| B. | when is Thanksgiving Day | |
| C. | which animal does he like best | |
| D. | what time will the dolphin show start |