问题
选择题
Look! The Greens _______ in the room.
A．reads
B．were reading
C．are reading
D．read
答案
答案：C
look是一个正在进行时的标志性词语，故排除B。正在进行时的构成是be+v-ing故选C
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Look! The Greens _______ in the room.
A．reads
B．were reading
C．are reading
D．read
答案：C
look是一个正在进行时的标志性词语，故排除B。正在进行时的构成是be+v-ing故选C