Whenever he was asked why he was late for class，he would answer carelessly，______ the same thing.
A. saying B. said C. to say D. say
He is the most suitable person _______the task.
A. to finish B. finishes C. finished D. finishing
_________, the experiment is sure to succeed.
A. If carefully doing B. If carefully done
C. If it done carefully D. If it doing carefully
The cost of buying a house in Beijing is higher than ______in Luoyang。
A. it B. one C. that D. this
.There are over 58000 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. 不填；不填
-----Did you enjoy your trip to the town?
-----_________. We had driven more than 3 hours before we found the right way.
A. Absolutely B. Go ahead C. Not at all D. Quite a lot
