I don’t know he will come tomorrow, he comes, I will tell you.
| A．if; whether | B．whether; whether |
| C．whether; if | D．that, whether |
He found ___________ hard to finish the work in such a short time.
| A．that | B．this | C．it | D．its |
—Will people live to be 200 years old?
—____________.
| A．No, they aren’t. | B．No, they won’t. | C．No, they don’t. | D．No, they can’t. |
Can you tell me_____________?
| A．when did the train arrive | B．whether has the train arrived |
| C．when will the train arrive | D．whether the train has arrived |
---______ to give the letter to Mr. Wang. It’s very important.
---No, I won’t.
| A．Remember | B．Don’t forget | C．Be sure | D．Make sure |
They have to ______leaving for London because of the bad weather.
| A．put on | B．put out | C．put up | D．put off |