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1.Lots of empty wine bottles were found under the old man's

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1.Lots of empty wine bottles were found under the old man's bed.He must have done nothing but______
A.drink B.to drink C.drinking D.drunk
句中出现do时,在but,excpt之后的不定式符号to要省略
那应该选A啊 可是答案给了我C
2.He was busy writing a story,only_stopping_once in a while to get something to eat and drinking
我知道这里是用stopping但是我讲不出理由 求一个标准理由
3.Human facial expressions differ from those of animals in the degree______they can be controlled on purpose.
A.with which B.to which C.of which D.for which
能不能麻烦这句句子解释一下
1.Lots of empty wine bottles were found under the old man's
第一题but{to}do表目的,doing表状态.
第二题只有祈使句用动词原形,非祈使句动词放开头都用ing.
第三题这句话的意思是“在某种程度上,人类的面部表情不同于动物的,(人类的面部表情}可以有目的地控制.of which 代指"human facial expressions",相当于"whose facial expressions",只能用of which,不能用其他,因为of which 才有whose 的意思.