—Excuse me.Is this the right way to the Summer Palace?

—Sorry, I am not sure.But it _______ be.?

A. might B. will?

C. must D. can?

Is this the reason _______ at the meeting for his carelessness in his work?

A. he explained      B. what he explained  

C. how he explained      D. why he explained

——Is this the first time you _______ Qingdao?

—— No, but the first time I _______ here, the city wasn’t so beautiful.

  A. visited; came                B. visited; have come  

  C. have visited; have come       D. have visited, came

Is this the way ____ you do it?

  A. which          B. in that          C. /                    D. that

Is this the reason ________ at the meeting for his being late for six times?

1. A.
   he explained
2. B.
   what he explained
3. C.
   how he explained
4. D.
   why he explained