—Has your father got up?
—Sorry, I’m not sure. He __________ got up. Please go and see for yourself.
| A．must have | B．can’t have | C．would have | D．might have |
Water, which seems so simple and common, is ______ makes life possible.
| A．which | B．what | C．that | D．how |
Let’s go to ______ cinema—that will take your mind off the problem for while.
| A．the; the | B．the; a | C．a; the | D．a; a |
With a lot of difficult problems________, the manager felt worried all the time.
| A．settled | B．to be settled | C．settling | D．to settle |
I have been keeping the portrait ________．I can see it every day, as it always reminds me of my childhood in Paris.
| A．since | B．where | C．as | D．if |
The driver began to speed up to ________________ for the hour hed lost in the traffic jam.
| A．keep up | B．take up | C．catch up | D．make up |