She devoted as much time as she could ____________ others.
A. help B. helped C. to helping D. Helping
Sam is a little weak in English and he has _____ what the teacher says in class.
A. difficult to understand
B. difficult understanding
C. difficulty to understand
D. difficulty understanding
______ great fun they had singing and dancing last Sunday night!
A. How a B. What a C. How D. What
Not only you but also he ________ to my birthday party.
A. have been invited B. has been invited
C.are invited D.invited
The floor requires_________.
A.to wash B. to be washing C. washing D. Washed
I think your advice is of great value to me and it’s well worth ________.
A. to take B. taking C. to give D. Giving
