问题
Every day we are using so many raw materials which _________that they _________.
A:are running out will be used up
B:are being run out will run out
C:have run out of will be using up
D:have run out will run out of
B:are being run out will run out
C:have run out of will be using up
D:have run out will run out of
正确答案是：
