问题
The pilot, whether ______ or design, made the plane do a sharp turn [ ]
A: by accident
B: at times
C: suddenly
D: all at once
B: at times
C: suddenly
D: all at once
正确答案是：
同类题型
e of air pollution being greatlyreduced, this city is still ______.
Many people would like to say, but _______ would like ________
_____ smoking, he would not have got cancer in the lung.
How much money has he devoted these poor children return to school
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