He said that the plane had already left and that I _______ an hour earlier.
A.must have arrived
B.had to arrive
C.should have arrived
D.was supposed to arrive

Good teeth help us to ................
A.be nice
B.have a good eyesight
C.chew our food
D.be important

A lot of people visit a dentist only when ............
A.their teeth grow properly
B.they have holes in their teeth
C.they have toothache
D.they have brushed their teeth

There is a mistake in the sentence. Find the mistake and correct it.
Surface is many cheaper than airmail
A.Surface
B.many
C.cheaper
D.airmail

There is a mistake in the sentence. Find the mistake and correct it.
The climate in Vietnam is different than that in England.
A.The climate
B.different
C.than
D.in

She /used/ stay / her uncle/ when / be / a child.
A.She used to studying with her uncle when she was a child
B.She used to study with her uncle when she had been a child
C.She used to study with her uncle when she were a child
D.She used to study with her uncle when she was a child

It / difficult/ learn English / without/ good dictionary.
A.It is difficult to learn English without a good dictionary.
B.It is difficult for learning English without a good dictionary.
C.It is difficult of learning English without a good dictionary.
D.It is difficult from learning English without a good dictionary.

We ought to try clean our teeth ..............
A.once a day
B.at least twice a day
C.between meals
D.before breakfast

There is a huge amount of _______ associated with children’s TV shows nowadays.
A.produce
B.manufacturing
C.merchandising
D.sales

It’s essential that every student _______ the exam before attending the course.
A.pass
B.passes
C.would pass
D.passed