请适当解析~

请适当解析~
As soon as he comes back,I'll tell him when__and see him
A You will come B you come 但是我觉得是B 主将从现不是吗?
Hurry up!Alice and Sue are waiting for you at the school gate.
-Oh!I thought they _______ without me.
a.went b.are going c.have gone d.had gone 这个为什么不选C,是虚拟语气吗?
What were you up to when your parents came in?— I＿＿for a while and＿＿some reading.
A.was playing； was going to do B.played； did
C.had played； was going to do D.had played； did
为什么不是A呢?
Her Bag,( )she put all her books,has not been found..
A Where B in which (选B 为什么不是A?）