题目内容
【题目】It's 7 in the morning. Three little monkeys in the trees.
A. is playing B. are playing C. plays D. play
【答案】B
【解析】
句意：现在是早晨7点，三个小猴子正在树上玩。Ais playing现在进行时；Bare playing现在进行时； Cplays单三形式； Dplay动词原形。根据It's 7 in the morning.可知用现在进行时态，结构是be doing，排除C/D；根据主语Three little monkeys复数，所以用are；故选B
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