It is the writing English that causes difficulties to foreigners.
A.the writing
B.that
C.difficulties
D.foreigners

Foreign students who are making a decision about which school to attend may not know exactly where the choices are located.
A.are making
B.about which
C.to attend
D.the choices

Friendly though he may seem, he's not to be trusted.
A.He's too friendly to be trusted.
B.However he seems friendly, he's not to be trusted.
C.He may have friends, but he's not to be trusted.
D.However friendly he seems, he's not to be trusted.

When the unemployment rate is high, the crime rate is usually also high.
A.The unemployment rate and the crime rate are both higher.
B.The higher the unemployment rate is, the higher the crime rate is.
C.The unemployment rate is as high as the crime rate.
D.The high rate of unemployment depends on the high rate of crime.

I wish you hadn't said that.
A.I wish you not to say that.
B.If only you didn't say that.
C.I hope you will not say that.
D.It would be nice if you hadn't said that.

The ________ of the pagoda in the water was very clear and beautiful.
A.sight
B.shadow
C.reflection
D.mirror

Minh and Cuong were badly injured in the last match, so __________ can play in this match.
A.both of them
B.neither of them
C.none of them
D.either of them

Bill Gates is probably the best known and most successful _________ in computer software.
A.pioneer
B.navigator
C.generator
D.volunteer

The disappearance of one or several species may result in the loss of _______________
A.biology
B.biography
C.biodiversity
D.biochemistry

The teacher asked a difficult question, but finally Ted ___________ a good answer.
A.came up to
B.came out at
C.came up with
D.came out of