The oil must be used up, ____ the light went out.
| A．for | B．because | C．since | D．as |
If _______ unsolved, this may lead to more serious problems.
| A．making | B．remained | C．left | D．taking |
The new movie _____to be one of the biggest money-makers of all time .
A. pretends B agreesC. promisesD. declines
________ twice, the postman refused to deliver our letters unless we chained our dog.
| A．Having bitten | B．Being bitten | C．Bitten | D．To be bitten |
When ______ in a red coat, she looks like a young lady.
| A．wearing | B．dressing | C．dressed | D．having on |
John was a student at this university from 1999 to 2003, ________ he studied hard and was made chairman of the Students’ Union.
| A．during which | B．by which | C．during which time | D．by which time |