They ______ a small laboratory and devoted every spare moment to this work.
A. picked up B. put up C. set up D. grew up
I like getting up very early in summer. The morning air is so good ________.
A. to be breathed B. to breathe C. breathing D. being breathed
The mountain is covered with heavy snow and it is ______ only by helicopter.
A. acceptable B. available C. accessible D. convenient
Have you adapted _______ in a different country?
A. to living B. to live C. living D. in living
------- What’s that noise?
--------- Oh, I forgot to tell you. The new machine ____________.
A. was tested B. will be tested
C. is being tested D. has been tested
— Do you know where David is ? I couldn’t find him anywhere.
— Well, he ______ have gone far –-his coat’s still here.
A. shouldn’t B. mustn’t C. can’t D. wouldn’t
