It was a nasty memory. Do you remember both of us wearing sunglasses to avoid ________________ by the supervisors?
A. to be recognized
B.to recognize
C.recognizing
D.being recognized

Did you accuse Nam of ___________ a plate? Well, I saw him __________ it off the table with his elbow.
A.break/ knock
B.breaking/ knocking
C.to break/ to knock
D.breaking/ knock

__________ can cause you many health problems.
A.Smoke
B.Smokes
C.To smoke
D.Smoking

Have you ever considered ______________ a pharmacist?
A.becoming
B.became
C.become
D.to become

They couldn’t help _______________ when they heard the little boy singing a love song.
A.to laugh
B.laughed
C. laugh
D.laughing

The police ............. them get out of the car.
A.made
B.caused
C.asked
D.ordered

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