_______ she was standing and waiting for a bus that she caught sight of the former President Clinton.
| A．It was while | B．As soon as |
| C．While | D．During the time when |
I have often heard the ABC Song ________, but I have never heard Alice ________ it.
| A．to be sung; to sing | B．being sung; sang |
| C．sung; sing | D．sang; singing |
I can make you ________ what I say, but you can’t make yourself ________ in English.
| A．understand; understood | B．understand; understand |
| C．to understand; understand | D．understand; to be understood |
He found them ________ at a table ________.
| A．seated; playing chess | B．sitting; to play chess |
| C．sat; to play chess | D．seat; play the chess |
The result of the entrance exams was not made ________ to the public until last Thursday.
| A．knowing | B．known | C．to know | D．to be known |
I don’t think it is advisable ________ in your coming university.
| A．your studying maths | B．you study maths |
| C．for you to study maths | D．of you to study maths |