A knife attack happened at the subway and at least 3 people ________.
A. killed B. are killed C. were killed D. were killing
By the end of last term, we ________ English for four years.
A. have learned B. learned C. would learn D. had learned
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
