It sounds like something is wrong with the car's engine.________，we'd better take it to the garage immediately.(2011·江苏，33)
| A．Otherwise | B．If not |
| C．But for that | D．If so |
Reading provides the mind only with materials of knowledge; it is thinking that makes ________ we read ours.
| A．that | B．what | C．which | D．it |
We have done things we ought not to have done and ________ undone things we ought to have done.
| A．left | B．leaving | C．will leave | D．to leave |
I just don’t understand ________ that prevents so many children at school from being as happy as one might expect.
| A．what it is | B．what it does |
| C．what is it | D．why is it |
— Mr． Gordon asked me to remind you of the meeting this afternoon． Don't you forget it!
— Ok, I ．
| A．won't | B．don't | C．will | D．do |
— Do you think our basketball team played very well yesterday?
— ．
| A．They were not nervous at all |
| B．They were still young |
| C．They played naturally |
| D．They couldn’t have done better |