—I hear Jane has gone to the Holy Island for her holiday.
—Oh, how nice! Do you know when she ________?
| A．was leaving | B．had left |
| C．has left | D．left |
The Town Hall ______ in the 1800’s was the most distinguished building at that time.
| A．to be completed | B．having been completed |
| C．completed | D．being completed |
After a knock at the door, the child heard his mother’s voice ______ him.
| A．calling | B．called | C．being called | D．to call |
Pop music is such an important part of society ______ it has even influenced our language.
| A．as | B．that | C．which | D．where |
With the help of high technology, more and more new substances ______ in the past years.
| A．discovered | B．have discovered |
| C．had been discovered | D．have been discovered |
--- Guess what! I have got A for my term paper.
--- Great! You ______ read widely and put a lot of work into it.
| A．must | B．should | C．must have | D．should have |