题目内容
——________ Mary happy today?
——I don’t think so. She ________ look happy this morning.
| A．Is, isn’t | B．Is, doesn’t |
| C．Are, doesn’t | D．Does, doesn’t |
B
解析试题分析：句意：---玛丽今天高兴吗？----我不这么认为。她今天早晨看起来不开心。happy是形容词，所以前面加be动词，主语是三单，第一空填is；第二空后面look是实意动词，所以前面加助动词does，根据句意可知是否定，故答案选D。
考点：考查助动词的用法。
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