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
Please tell me the way you thought of _______ to stop smoking.
A.make up your mind B.to make up your mind
C.making up your mind D.to making up your mind
