If you don’t wake up early, you can’t catch the first bus to the city center.
A.You haven’t to wake up early to catch the first bus to the city center.
B.You don’t have to wake up early to catch the first bus to the city center.
C.You have to not wake up early to catching the first bus to the city center.
D.You have to wake up early to catch the first bus to the city center.

A.explanation
B.preparation
C.considerate
D.information

A.appearance
B.ambitious
C.performance
D.telephone

A.individual
B.competitive
C.occupation
D.documentary

A.relation
B.arrange
C.summary
D.eliminate

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

Mary found it hard to concentrate on her work because the noise.
A.hard
B.to concentrate
C.work
D.because the noise

Rice is most important plant in Vietnam.
A.Rice
B.is
C.most important
D.in Vietnam

After George had returned to his house, he was reading a book
A.had returned
B.his house
C.he
D.was reading

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.