She has finished typing but she doesn’t know _______ next.
A. what to do B. how to do
C. what should she do D. how she should do
The kind teacher devoted all her time she had ___________ her students.
A. help B. to help
C. helping D. to helping
— It’s dangerous to walk across the street carelessly.
— You’re right. We can’t be careful while crossing the street.
A. so B. very C. too D. more
It’s quite clever ________ you _______ out the problem.
A. for; working B. for; to work
C. of; working D. of; to work
---Tom, you play football in the street. ---Sorry, I do it again.
A. needn’t; won’t B. mustn’t; won’t
C. can’t; will D. won’t; can’t
Not only Mr. and Mrs. Green but also their daughter ________ abroad twice.
A. have gone B. have been
C. has gone D. has been
