We __________ have proved great adventurers, but we have done the greatest march ever made in the past ten years.
| A．needn’t | B．may not |
| C．shouldn’t | D．mustn’t |
Einstein liked Bose’s paper so much that he________his own work and translated it into German.
| A．gave off |
| B．turned down |
| C．took over |
| D．set aside |
You know，the tickets for Jay’s concert can ________ online from tomorrow.
| A．be booked |
| B．book |
| C．order |
| D．be ordered |
________ the Internet is of great help，I don’t think it’s a good idea to spend too much time on it.
| A．If |
| B．While |
| C．Because |
| D．As |
Fortunately they________an end to the wrong action in time，therefore a disaster was avoided.
| A．took |
| B．put |
| C．came |
| D．made |
He________invitations to many famous people so as to hold a successful party.
| A．celebrated |
| B．traded |
| C．extended |
| D．expanded |