Mrs Wilson is busy and ___ help.A; is need B:need C:needs D:

Mrs Wilson is busy and ___ help.A; is need B:need C:needs D:hope
还有：
Mery,is the post office ___ the library?---Yes,they are opposite to each other.
A：next to B：across from C：in front of D：on the right of
I can’t see any ___animals in the small zoo.there are only some monkeys and birds.
A:another B:other C:the other D:others