There are hundreds of students in front of the school gate to welcome the scientist from America.
| A．waited | B．to wait | C．waiting | D．wait |
A foreign language like English is difficult to learn, so you ____________ work too hard.
| A．can’t | B．must | C．shouldn’t | D．ought to |
Mr. Smith works as a government official now, but he ______ in a middle school for 5 years.
| A．has worked | B．worked | C．had worked | D．had been working |
I make most of my money by writing books but I do __________ magazines sometimes.
| A．refer to | B．see to | C．contribute to | D．add to |
They _______him to drop the plan, but he was determined to carry it through to the end.
| A．urged | B．persuaded | C．encouraged | D．suggested |
I’ve never seen _________________ you.
| A．as a clever boy as | B．as clever a boy as |
| C．the same clever boy as | D．a boy the same clever as |