Correct Answer : C
Explanation :
Explanation :
Must expresses necessity/obligation.
Correct Answered :
Wrong Answered :
A
Can
B
May
C
Must
D
Should
Must expresses necessity/obligation.
Correct Answered :
Wrong Answered :
A
Mustn`t
B
May not
C
Should not
D
Need not
Need not = unnecessary action.
Correct Answered :
Wrong Answered :
A
didn`t have to do
B
hadn`t to do
C
mightn`t have done
D
mustn`t have done
`Didn`t have to do` is correct as it was kind but not necessary.
Correct Answered :
Wrong Answered :