He ________ build a motorcycle if he is given all the parts.
A. should B. can C. must D. need
Work harder, ________ you’ll make greater progress.
A. but B. or C. so D. and
Jim and John are often told ________ too much time playing video games.
A. not to spend B. not spend C. don’t spend D. not spending
As computers are getting ________, they are widely used in schools and offices today.
A. least expensive B. as expensive C. so expensive D. less expensive
They were afraid to complain about the noise ________ they didn’t want to make an enemy of their neighbors.
A. because B. unless C. though D. when
I’m working at part-time jobs ________ I can find something permanent (永久性的).
A. as B. while C. after D. until
