He changed so much that only when I looked closely________he was exactly my long lost friend.
| A．I realized | B．did I realize |
| C．I did realize | D．realized I |
“Is John coming by train？” “He should, but he _____ not. He likes driving his car.”
| A．must | B．can |
| C．need | D．may |
You _______ pay too much attention to your reading skill, as it is so important.
| A．cannot | B．shouldn’t |
| C．mustn’t | D．needn’t |
“I promise that she _____ get a nice present on her birthday.” “Will it be a great surprise to her？”
| A．should | B．must |
| C．would | D．shall |
“Mike is often absent from class.” “Tell him he _____ answer for it if he goes on behaving like that.”
| A．shall | B．will |
| C．would | D．can |
It was not until he came back _____ he knew the police were looking for him.
| A．which | B．since |
| C．that | D．before |