Mr. White always expected his son _______________ an active part in the classes.
A. taking B. take C. takes D. to take
–_______________ does a CRH train run? –It runs up to more than 300 km an hour.
A. How long B. How far C. How fast D. How soon
You shouldn’t keep a pet
_______________ you have enough time to care for it.
A. if B. unless C. though D. when
___________ the young girl ___________ her parents take regular exercise in order to keep fit.
A. Not ... but B. Either ... or C. Neither ... nor D. Not only ... but also
Generally speaking, a computer works _______________ a human brain.
A. more accurately than B. more accurate than
C. as accurate as D. so accurately as
Nowadays, children under 1.4 meters _______________ be free to take buses in some cities.
A. need B. must C. shall D. can
