语法与词汇
15.
Our teacher recommended that we_____as attentive as possible when we visit the museum.
A、
are
B、
shall be
C、
be
D、
were
【正确答案】
C
【答案解析】
recommend，command，suggest等词后接的宾语从句应用虚拟语气，即should+动词原形。
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