填空题

His recommendation that the Air Force (investigate) ______ the UFO sighting was ap proved by the commission.

【参考答案】

(should)investigate
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填空题
The food that Mark is cooking in the kitchen (smell) ______ delicious.
单项选择题
A．To go to the classroom.B．To show the woman around the school.C．To see the headmaster.D．To introduce the woman to the headmaster.
A．To go to the classroom.
B．To show the woman around the school.
C．To see the headmaster.
D．To introduce the woman to the headmaster.
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