Bài tập trắc nghiệm câu giả định.

It’s important that he ______________ to take her medicine twice a day

I suggest that John_______________ the directions carefully before assembling the bicycle. He doesn’t want the wheels to fall off while he is riding down a hill.

Mrs. Mary demanded that the heater _____________________ immediately. Her apartment was freezing.

It’s vital that the United States __________________ on improving its public education system. What we do now will affect our country for generations to come.

The monk insisted that the tourists_______________________ the temple until they had removed their shoes.