风扫磨系统可广泛地用于粉磨()。
A、煤
B、生料
C、水泥
D、混合材
参考答案:A
It is quite ________ that Tom hurts her deeply and he must apologize to her.[ ]
A. obvious
B. usual
C. different
D. normal
—Did you see a girl in white pass by just now?
—No, sir. I ______ a newspaper.[ ]
A. read
B. was reading
C. would read
D. am reading