My son ____ the examination, but he wasn't careful enough.
| A．might be able to pass | B．must have passed |
| C．could have passed | D．were able to pass |
——_____was the Nanjing-Changjiang Bridge open to traffic?
——It was open to traffic in 1968.
| A．What | B．What time | C．How long | D．When |
_____writer is better known in China, Charles Dickens or Mark Twain?
| A．Whichever | B．Whether | C．What | D．Which |
Shall we stay at home or_____to the park?
| A．to go | B．going | C．go | D．will go |
——Do you think the question easy or not?
——_____ .
| A．Yes, I do | B．No, I don’t | C．It is easy | D．Yes, it’s easy |
I go or_____you go yourself?
| A．Will…will | B．Shall…shall | C．Shall…will | D．Will…shall |