几道高一的英语题【语法】,求解释.没有把握勿入.

几道高一的英语题【语法】,求解释.没有把握勿入.
1.It was two years_____he came back
Abefore B. when C. that D. after
2.There______no class yesterday,he paid a visit to the Great Wall
A.was B.were C.had been D.being
3.______her mom had come,her face lit up
A.Hearing BHaving heard C.When hearing D.When she heard
4._____(use)your head,you'll get an idea
_______(use)your head,and you'll get an idea【用括号内所给的单词的正确形式填空】
Is this hotel______you stay often
A.the one B.where Cthe one where D in which
_____(face)with the problem,he _____(lose)in deep thought
The old man walked in the street______
A followed by his sonB followed his son Cand followed by his son D and following his son
用before after since填空
1)It was 3 years ______ he came back.
2)It was 3 years ago ______ he came back.
3)It is 3 years ______ he came back.
第九行末尾少了个问号。