1.______,he had studied art in Paris.
A.When a boy B.As boy C.As a boy D.As he is a boy
2.How magnificent the big bridge looks at night when all the lights are________!
A.switched over B.switched off C.switched down D.switched on(为嘛不是D)
3.No one tells _______,so I need your help.
A.how should I do B.what should I do C.how to do it D.what to do it
4.Do you know who was the first ______here?
A.reach B.to arrive C.to get to D.to arrive at