Scientists are trying to develop a special material, ________ they will make use of in
spacecraft.
A. it B. one C. that D. what
He was absent for two weeks, so he had a lot of homework to ________.
A. make up B. put up C. take up D. pick up
--- Do you think he will do me a favor?
--- As far as I know, he is the last one to help others. He _______ be prepared to give you a hand, though.
A. might B. must C. can D. should
Those lovely flowers were ______ for your mother for her 57th birthday, but as she is away, I would be glad if you accept them.
A. committed B. intended C. supplied D. scheduled
You look not a bit older than you did 10 years ago. How do you _______ so young?
A. change B. grow C. stay D. become
We thought of throwing away these old things, but we’ve decided to _______ them. They might bring us a lot of money.
A. hold on to B. keep up with C. pack up D. figure out
