.________ of the truth of the reports, he told his colleagues about it.
| A．Convincing | B．Convinced | C．To convince | D．Having convinced |
----Mr. Johnson, would you have some more ice-cream?
----No, thanks. It’s very good, but I have to _____ my weight, you know.
| A．remain | B．notice | C．watch | D．care |
How can you expect him to make any improvement ________ you never give him an opportunity to have a try?
| A．unless | B．when | C．until | D．while |
________ you didn't know the rules won't be an excuse for your failure to report.
| A．That | B．Where | C．What | D．Why |
________ anything, give me a call and I'll be glad to help you.
| A．Had you required | B．Should you require |
| C．Would you require | D．Could you require |
I can guess you were in a hurry. You ______ your sweater inside out.
| A．had worn | B．wore |
| C．were wearing | D．are wearing |