题目内容：

1.when did s.h.e start singing?
They staeted singing ＿＿＿＿2001.
A.in B.on C.at D.of
2.I'm not feling well.＿＿＿＿.
you should see a dentist.
A.I have a fever B.I have a sore back C.I have a toothache D.I have a stomachache
3.what are you doing this Satueday?
I'm tired and I'm just＿＿＿＿at home.
A.relaxing B.going shopping C.going camping D.going fishing
请各位大哥大姐把答案说出来并且解释下,我一定会加分的!