[单选题]—Who has taken my pen away?—__________. He was here a moment ago.

A
It must be Li Ping
B
It is Li Ping take
C
Li Ping is
D
Li Ping must take
正确答案:A
题目解析
本题是对情态动词的考查。句意表示肯定的推测用must,而it指问句中提到的who。
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