问题补充：
Mary, you’d better stay at home. Your classmates over this evening.
A. are being coming.
B. has come.
C. are coming.
D. come.
答案：
A. are being coming.
B. has come.
(答案→)C. are coming.
D. come.
解析：考查时态：句意：玛丽，你最好呆在家里，你的同学今天晚上要过来。从第一句话Mary, you’d better stay at home.可知同学是今天晚上即将过来。用现在进行时表示一般将来时，选C。
