问题
using so many raw materials every day, 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：
