Rose is wondering ．（ ）
A．what is Matt doing
B．where has Jason gone
C．when will Aaron leave
D．who did the washing
The boy is crazy about music and we always hear him in the music room.（ ）
A．to singB．singsC．singingD．sing
You've the computer for ten years and it doesn't work well.Why don't you buy a new one？（ ）
A．boughtB．hadC．haveD．borrowed
I plan to travel to America next month，and I think 2000 dollars enough.（ ）
A．wasB．areC．isD．were
As a middle school student，you should learn to depend yourself to make a decision.（ ）
A．ofB．withC．forD．on
In our school every student has to choose a club to join，so about one students have joined the Sports Club.（ ）
A．hundred ofB．hundreds of
C．hundredD．hundreds