. —Why do you look worried?
—There are so many problems______.
| A．remaining to settle | B．remained settling |
| C．remaining to be settled | D．remained to be settled |
—You are always full of __________. Can you tell me the secret?
—Taking plenty of exercise every day.
| A．power | B．strength | C．force | D．energy |
—I've decided to spend the summer holidays traveling in Australia. -Oh，__________！
| A．if only I could go with you |
| B．how clever you are |
| C．what a pity |
| D．I'm glad to hear that |
He was told that it would be at least three more months __________ he could recover and return to work.
| A．when | B．before | C．since | D．that |
__________ I really don't like art, I find his work impressive.
| A．As | B．Since | C．If | D．While |
Last week, only two people came to look at the house，__________ wanted to buy it.
| A．none of them | B．both of them |
| C．none of whom | D．neither of whom |