He was educated at the local high school, ______ he went on to Beijing University.
| A．at which | B．after which | C．in which | D．during which |
________you were coming，I would have stayed at home.
| A．If I know | B．Should I know | C．Had I known | D．If I should have known |
________ so delicious，the food was sold out soon.
| A．Tasted | B．Tasting | C．Having been tasted | D．Being tasted |
—You look a bit worried.What has happened?
—So I do.You see，the computer I got ________ yesterday doesn’t work again.
| A．repaired | B．to be repaired | C．it repaired | D．it repairing |
This street is very crowded at this time of day.You have to be very cautious while ______.
| A．to drive | B．being driven | C．driving | D．having driven |
--- When shall I pay the bill?
---Don’t mind it, sir.__________.
| A．Please come at your convenience | B．Till you are convenient |
| C．You’ve got to pay it right away | D．I don’t mind it either. |