Books are the most important records we keep_____ man’s thoughts, ideas and
feelings.
A.up | B.of | C.for | D.on |
He’s got himself into a dangerous situation______he is likely to lose control over the plane.
A.where | B.which | C.while | D.why |
____ printed, this science fiction will be popular among the students.
A.Before | B.Unless | C.When | D.Once |
The manager commanded that the work ____ finished by the end of this month.
A.should be | B.will be | C.must be | D.ought to be |
Selecting a mobile phone for personal use is no easy task because technology ____ so rapidly.
A.will change | B.has changed |
C.will have changed | D.is changing |
The leader of the factory told us that very little ___was made of the waste material in the past.
A.cost | B.value | C.use | D.matter |