从选项中找出每个句子恰当的答语,并将答案标号写在题前括号内。
( ) It is . A.snow B.snowing C.snowwing
() I can help. A.her B.you C.his
( ) My mum and Dad sleeping. A.is B.are C.was
( ) This is library. A.the B.an C.\
( ) I have ice cream. A.a B.an C.\