单项选择题
A. are B. were C. be D. was
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
Not only the students but also the teacher()going to se...
单项选择题Not only the students but also the teacher()going to see the film.
A. will B. are C. is D. has
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
