单项选择题
A. will B. are C. is D. has
It is essential that people () enough vitamins every da...
单项选择题It is essential that people () enough vitamins every day.
A. have B. had C. must have D. will have
Some of his suggestions had been rejected () they were ...
单项选择题Some of his suggestions had been rejected () they were not practicable.
A. as B. when C. until D. if
I'll give you my telephone number in case you () want t...
单项选择题I'll give you my telephone number in case you () want to get in touch with me again.
A. should B. will C. shall D. need
