求以下几道英语题选择题的答案和理由
1.The doctor and writer ____ in Harbin last year.
A.is B.are C.was D.were
2.There _____ an english party next Saturday.
A.is going to have B.is going to be C.is D.will have
3.I met an old friend of mine on my way ______ home, and she was on her way ___ the shopping center.
A.to;to B./;to C.at;in D.to;at
4.On every piece of the paper ___ pictures of some fish.
A.is B.are C.has D.have
谢谢,谁知道应该选什么!并且告诉我为什么要选这个.