______ the time to pay a visit in advance， I can't meet him now．
A. Not having been fixed B. Not fixing
C. Having not fixed D. Not having fixed
______________ twice a year，whether it is a car，a bus or a truck，is the rule that every driver must obey in this city．
A. Examining B. Examined
C. Having been examined D. Being examined
The discovery of new evidence led to ．
A. the thief having caught B. catch the thief
C. the thief being caught D. the thief to be caught
I was told that there were about 50 foreign students Chinese in the school， most were from Germany．
A. study； of whom B. study； of them
C. studying； of them D. studying； of whom
---I think you should phone David， who is in charge of the project____， and apologize to him．
---________! It was his fault．
A. under way； No way B. under way； No problem
C. in the way； No chance D. on the way； No way
Out of the train__________， well -dressed and waving to the crowd．
A. a tall man stepped B. was stepping a tall man
C. did a tall man step D. stepped a tall man
