My father/ used to/ smoke / when/ he / young.
A.My father used to smoking when he was young.
B.My father used to smoke when he is young.
C.My father used to be smoked when he was young.
D.My father used to smoke when he was young.

________(4)
A.job
B.walk
C.go
D.wait

________(6)
A.telephones
B.computers
C.mails
D.souvernirs

________(7)
A.classmate
B.people
C.friendly
D.friendship

________(9)
A.bought
B.loan
C.lend
D.sold

The problem of the use of our natural resources may be divided into _________.
A.two parts
B.three parts
C.four parts
D.five parts

Minerals exist where they are _________.
A.because of the changing physical nature of the earth
B.because they are also need to be kept by soil
C.because they are great protectors
D.All are correct

You are very different ........................ your brother.
A.to
B.for
C.with
D.from

You will not pass the exam ......................... working harder.
A.unless
B.if
C.without
D.although

It was raining very ......................... so I had to wear my raincoat.
A.wet
B.badly
C.hard
D.heavy