13． I can’t understand is he wants to change his mind．
A．That , that B．Which , what
C．What , what D．What, why
12．That is there appears a rainbow in the sky ．
A．what B．when
C．why D．however
11．The trouble is we are short of tools ．
A．what B．that
C．how D．why that
10．It doesn’t matter I rest or not ．
A．if B．whether
C．that D．when
9．Father asked ．
A．what was wrong with me B．what’s wrong with me
C．what wrong was with me D．what wrong is with me
8．He you are not going abroad．
A．surprised that B．is surprised that
C．surprised at D．is surprised whether
7．A simple experiment shows air has some strength ．
C．which D．who
6．My friend wouldn’t tell me his new car ．
A．how much he paid for B．how much did he pay
C．he paid how much for D．did he pay how much
5．She wanted to know ．
A．whether I knew her and where did she work
B．if I knew her and the factory she worked there
C．wherther I knew her and the factory she worked
D．if I knew her and the factory where she worked
4．Cornputers can only give cut has been stored in them .
A．that B．which
C．what D．anything