下列英文题的答案,并讲出为什么?

下列英文题的答案,并讲出为什么?
1.One way to understand thousands of new words is to gain ____ good knowledge of basic word formation.
A.不填 B.the C.a D.one
2.He will have learned English for eight years by the time he ____ from the university next year.
A.will graduate B.will have graduated C.graduates D.is to graduate
3.In order to gain a bigger share in the international market,many state-run companies are striving ____ their products more competitive.
A.to make B.making C.to have made D.having made
4.It has been announced that candidates ____ remain in their seats until all the papers have been collected.
A.can B.will C.may D.shall
5.The patient felt relieved after the doctor ____ the cancer from his stomach.
A.cleared B.operated C.removed D.swept
6.Though ____ money,his parents managed to send him to university.
A.lacked B.lacking of C.lacking D.lacked in
7.Don't use words,expressions,or phrases ____ only to people with specific knowledge.
A.being known B.having been known C.to be known D.known
8.____ to sunlight for too much time will do harm to one’s skin.
A.Exposed B.Having exposed
C.Being exposed D.After being exposed
9.____ be sent to work there?
A.Who do you suggest B.Who do you suggest that should
C.Do you suggest who should D.Do you suggest whom should
10The electrician checked all the electrical equipment to prevent any possible ____ failure.
A.light B.power C.electricity D.energy
11.The newly-built bookstore provides easy ____ to good books.
A.access B.convenience C.channel D.chance

C 当knowledge指一个人对某一具体事物或具体学科的知识时,可以与不定冠词a连用
C 将来完成时
A strive to do
D 句义表“应该”
C 摘除（恶性）肿瘤,摘除为remove
C 非谓语动词=Though he lacks money.lack在此为vt.而lack in 表在某方面缺乏,故也不适合
C 动名词作主语,又因为是被动义,所以Being exposed
B suggest sth/that/to do/doing,没有suggest do
B 表停电.有点钻牛角尖的题目,electricity failure好像也有这种说法,但可能power failure更地道
A access表渠道、途径