Bobby ________ me your secret, but he meant no harm.
| A．shouldn’t have told | B．should tell |
| C．mustn’t have told | D．could tell |
—Did you stay up late last night?
—Not very late. It was half past elevenI went to bed.
| A．that | B．when | C．before | D．since |
—When didaccident happen?
—Oh, it was onSunday towards the end of this summer, as far as I can remember.
| A．an; the | B．/;the | C．the; a | D．an;/ |
The project is so designed that once _______ nothing can be done to change it．
| A．starts | B．having started | C．started | D．starting |
There was a man crying over there．He _______ himself．
| A．could hurt | B．might hurt | C．must have hurt | D．might have hurt |
______ a good result，the professor decided to do the experiment once more．
| A．Not getting | B．Getting not | C．Not having got | D．Having not got |