—What should we do first if we want to develop our village? —A lot of new roads_____, I think. A. have to build B. must build C. must be built
---What are you going to do this weekend? -----I’m going to help _____the city parks with my classmates to make them clean.
Mr. Wang _______drive to work, but now he _______there by bike to keep healthy.
— We weren’t able to any new suggestions. — Don't worry. We’ll try to figure it out.
-Steven, could you help me_______ when the plane will take off on the Internet? -I'm sorry, my computer doesn't work.
— The little boy is afraid of _________ out at night. — Oh, he should be braver.