[求助]10题请教语法高手，不胜感激！

1.（Perhaps )it was her (own) physical disabilities (that) led Helen Keller( to promote) social causes.

2.Unlike a tomato_____, a hurricane occurs on the ocean.
    B. occurring on land
    D. which occurs on land

3.Tony Kushner,______, received much acclaim for Angels in America.
A.a well-known playwright
B.whose written plays are known

4.Physics is a branch of science defined as the study of matter, energy, and______.
A.the relationship between them
B.their relation
C.their relations

5.Papyrus (was used) in ancient civilizations as a writing (material)( as well as) material for sails,( basket), and clothing.

6.The more powerful the tennis serve, ___________.
A.the more difficult it is to return it
B.the more difficult the return

7.For seventy years, Marxism and Leninism ruled the Soviet Union,____________ was not tolerated.
    A. and dissent
   B. where dissent

8. American plains Indians relied heavily on the buffalo_______ almost every part of the animal including the meat, hide, and bones.
   A. that they used
   B. and used

9. Because of the prevailing westerlies, it usually takes longer to fly east______ to fly west.
   A. than does it
   B. than it does

10. Countries rely on satellites for both communication and ________ purposes.
    A. defense
    B. defending

1.The answer is C(that). Why not D? basket—baskets?
2. The correct answer is D. Why B is wrong?
3. The correct answer is A. Why B is wrong?
4. The answer is A. Why B or C is wrong?
6. The answer is B. why A is wrong?
7. The answer is A. why B is wrong?
8. The answer is B. why A is wrong?
9. The answer is B. why A is wrong?
10. A. why B is wrong?

我猜这种题目不会是ETS出的，太含糊，乱人耳目，纯粹是为了难倒你，实在是看不下去了，只有这一题解答如下：

3.known不可以作表语，一般的用法是be known for(to)...

还是那句话，楼主要是准备考试，非ETS的题目不做