827.I can't thank you _____ much because without your help I ____ have won the first prize.
A.to;wouldn't
B.very;shouldn't
C.that;might not
D.so;couldn't
828.I am going to buy the overcoat if the shopowner _______ lower the price.
A.must
B.should
C.need
D.will
827.答案是A;第一空为can/could not…to，无论怎样也不过分；第二空为含蓄条件，与过去事实相反。
828.答案是D;考查情态动词。Will表意愿。
