Doctors say that exercise is important for health, but it _______ be regular exercise.
A．can B．will C．must D．may
We were astonished _______ the temple still in its original condition.
A．finding B．to find C．find D．to be found
Joseph ______to evening classes since last month, but he still can’t say “What’s your name?” in Russian.
A．has been going B．went C．goes D．has gone
Jim went to answer the phone. _______, Harry started to prepare lunch.
A. However B. Neverthelesss C. Besides D. Meanwhile
There are over 58, 000 rocky objects in _______ space, about 900 of which could fall down onto _______ earth.
A．the; the B. 不填; the C．the; 不填 D．a; the
The girl had hardly rung the bell the door was opened suddenly, and her friend rushed out to greet her.
A. before B. until C. as D. since
