It was _____ he came back from Africa that year _________ he met the girl he would like to marry.
| A．when; then | B．not; until | C．not until; that | D．only; when |
I don’t know _____,
| A．how can I finish my homework on time |
| B．how could I finish my homework on time |
| C．I can how finish my homework on time |
| D．how I can finish my homework on time |
The old pianist requested that he ____ the piano in the public again.
| A．play | B．played |
| C．would play | D．was going to play |
It is not who is right but what is rightis of importance.
| A．which | B．it |
| C．that | D．this |
You must watch carefully everything _____ the teacher does in class.
| A．where | B． who |
| C．what | D．that |
She didn't come to his birthday party just_____ what he had said to her the day before.
| A．because | B．because of |
| C．as a result | D．thanks for |