My father usually helps me_______ English.
A.learn
B.both to learn and learn
C.to learn
D.learning

“Is that Paul? He must ______________ from Australia.”
A.returning
B.had returned
C.return
D.have returned

You _____________ touch electrical wires with wet hands.
A.aren’t allowed to
B.mustn’t
C.don’t have to
D.needn’t

You __________ file these documents now. It’s not urgent.
A.mustn’t
B.may not
C.can’t
D.don’t have to

He ______________ anything because he’s driving.
A.mightn’t drink
B.can’t drink
C.shouldn’t drink
D.didn’t have to drink

Although nobody can prevent you from spending your own money, you ____________ save for a rainy day.
A.better
B.would rather
C.would better
D.had better

People are becoming ______ aware of healthy eating, exercise, and relaxation, and want to incorporate them into their daily lives.
A.more and more
B.hardly ever
C.rather than
D.much as

I was relieved to see that the new computer software was________ complicated to use than I had thought it would be.
A.far too
B.much less
C.so much
D.the most

On the way to the mountain, it was impossible to see_______ a few meters ahead because of the heavy fog.
A.how far
B.rather than
C.so large
D.more than

The use of detail is _____ method of developing a controlling idea, and almost all students employ this method.
A.common
B.the most common
C.more common
D.most common