Scientists say it may be five or ten years___________ it is possible to test this medicine on human patients.
| A．since | B．before | C．after | D．when |
Disney used to ___ pictures in the family garage.
| A．drawn | B．draw | C．drew | D．drawing |
Jack failed again in the final exam, but he didn’t ___ heart.
| A．miss | B．lose | C．hurt | D．keep |
Tom was searching hard in the classroom in the ___ of finding his lost exercise book.
| A．wish | B．interest | C．goods | D．hope |
--Would you tell me the way ___ the school? ----I’m sorry, I don't know.
| A．to | B．for | C．toward | D．of |
---Oh, it’s five o’clock alreay. I must be going.----______?
| A．Can't you stay a little longer | B．What’s this | C．Why are you | D．Do you sit here |