The clock was striking twelve ______ down the street.
| A．because I walked | B．as I walked |
| C．since I was walking | D．while I was walking |
His mother asked him ___ watch TV ___ he finished his homework.
| A．not to , when | B．to, untill | C．to not. Till | D．not to; until |
---Can I speak to Tom, please? ---Yes. ____.
| A．I am Tom | B．Tom is here | C．That’s Tom. Who are you? | D．This is Tom speaking |
This dictionary has been ____ to us.
| A．of great help | B．of very helpful | C．of quite helpful | D．very much helpful |
She was often late for school, ___ made her teacher very angry.
| A．that | B．it | C．which | D．what |
The door remained ____. I didn’t know where he had gone to .
| A．closed | B．closing | C．close | D．to be closed |