选择所给的从属连词填空.when while as if as long as because since 1.( )h

选择所给的从属连词填空.
when while as if as long as because since
1.( )he has time,he will come and see us in New York.
2.Have a good look at that man ( )you pass him.
3.( )he comes tomorrow,I shall ask him where he has been.
4.( )the people of that country keep up their fight,they are sure to win.
5.He learned to speak German( )he was in Berlin.
6.It's no use asking him again( )he can't tell us.
7.The river has risen( )it was rained much recently.
8.( )I had two tickets,I would give you one.
9.Henry is in charge of the office( )Mr.s Smith is away.
10.( )this method doesn't work,let's try another.