说明理由 1.-Mary,now you have a chance to study in Singapore for a year as an exchange student.Are you interested?-______ that be true?Of course I'll go.A.May B.Might C.Can D.Must2._____ on the floor of small ponds is a new farming industry.A.Rai

说明理由
1.-Mary,now you have a chance to study in Singapore for a year as an exchange student.Are you interested?
-______ that be true?Of course I'll go.
A.May B.Might C.Can D.Must
2._____ on the floor of small ponds is a new farming industry.
A.Raising crabs B.Crabs are raised
C.Crabs raised D.Raised crabs
3.We have been told that under no circumstances _____ the telephone in the office for personal affairs.
A.may we use B.we may use C.we could use D.did we use

1.选C .那可能是真的吗?如果是,我会去.can是可能的意思.
2.选A.该句子缺主语,Raising crabs 是动名词作主语.
3.选A.under no circumstances后面用倒装,排出B,C,A中的may是可以的意思,根据整句意思,最为合适.

1. C, 这句话后面是问好，首先排除D.May 或者might 是可能的意思，不适合语境。
2. D
3. D under no circumstances 后面用倒装