1.--they dislike the lecture given by the professor,they sho

1.__they dislike the lecture given by the professor,they shouldn't have made so much noise.
A）even B)even so C)however D)however much 为什么不选C?
2I wonder whether he knows __to write a book.
A)how great pains it will cost B)how great pain it will take
C)what great pain t will cost D)what great pains it will take 为什么不选A?
3.High fuel costs have resulted in higher agriculture costs,_C__food stocks and land shifted out of food production to pruduce biofuels.
A)fell B)fallen C)falling D)been fallen 为什么不选B?
4.They have a doubt _A_this scientist can make of such material.
A) what B) whether C)how D)if 为什么不选B?
第4题选A好像DOUBT 后面还漏了一个THAT吧？