______ you may have , you should gather your courage to face the challenge .
| A．However serious a problem | B．Whatever serious a problem |
| C．However a serious problem | D．No matter how a serious problem |
A number of high buildings have arisen ______ there was nothing a year ago.
| A．when | B．where | C．before | D．until |
The boy, one of the so-called rich second generation, forced his parents to buy a new car _____ it might cost.
| A．no matter how | B．however high | C．no matter how much | D．how much |
—Was it under the tree ______ you went away talking to a friend?
—Sure. But when I got back there, the bike was gone.
| A．that | B．when | C．where | D．while |
He never speaks to others until ______.
| A．he speaks | B．spoken to | C．he is spoken | D．he speaks to |
It was not yet dawn ______ the boy got to the school.
| A．when | B．that | C．before | D．until |
Mary felt sad over the loss of photos she had shot in Australia, ______ that was a memory she especially treasured.
| A．as | B．which | C．when | D．where |
—Bob, look what you have done! You ruined the experiment.
—It’s not my fault. I just carried out the instructions _____.
| A．as told | B．as telling me | C．as telling | D．as I told |
While ____the dog, you should take care not to ____.Otherwise, it may be dangerous to strangers.
| A．walking; get loose | B．walk; be loose |
| C．walking for; get it loose | D．training; get it run |
When _______ help, one often says “Thank you.” or “It is kind of you “
| A．offering | B．to offer | C．to be offered | D．offered |
He left the key ______ he had been an hour before.
| A．what | B．that | C．where | D．which |
Though ______ to see us, the professor gave us a warm welcome.
| A．surprised | B．was surprised | C．surprise | D．being surprised |
_______ why she wasted money on a lottery ticket, the poor mother answered, “ A dollar is not too much to pay for 24 hours of hope”.
| A．Asking | B．Having asked | C．When asking | D．When asked |
hot the weather will be tomorrow, we must get the whole project .
| A．How; complete | B．However; to complete |
| C．How; completing | D．However; completed |
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