正确率高的再给加分呐~

正确率高的再给加分呐~
第1题
单选题
Do what you think is right _____ they say.
1.however
2.whatever
3.whichever
4.if only
第2题
单选题
The size of the audience,______ we had expected was well over one thousand.
1.whom
2.who
3.as
4.that
第3题
单选题
I don’t think you’ve heard of him before,______?
1.don’t I
2.do I
3.have you
4.haven’t you
第4题
单选题
There are many kinds of metals,______.
1.each having its special properties
2.having its special properties
3.one has its special properties
4.each has its special properties
第5题
单选题
Our society has changed and ______ in it.
1.so the people have
2.the people have so
3.so have the people
4.have the people so
第6题
单选题
No sooner had they got on train _______ it started moving.
1.when
2.than
3.then
4.after
第7题
单选题
We can do nothing unless we _____ more information.
1.are given
2.were to be given
3.will be given
4.were given
第8题
单选题
Most environmental problems exist because adequate measures for preventing them _____taken in the past.
1.was not
2.were not
3.were not being
4.being not
第9题
单选题
The football match _____ in the afternoon.
1.has been held
2.is being held
3.is going to be held
4.will hold
第10题
单选题
I’ll take down your name and address in case you _____ as a witness.
1.will need
2.will be needed
3.need
4.are needed