1.This road is very narro.it.......to be widened
A.might
B.needs
C.mustn't
D.may
2.if i had listened to my parents, i......at this job now
A.wouldn't be working
B.wouldn't have worked
C.don't have to work
D. Am not worked
3. .......anyone call, would you please ask them to call back later
A. If
B. Should
C. When
D. Unless
Đáp án và giải thích chi tiết