单选题：I am not certain whether he will come.（　　）

题目内容：

I am not certain whether he will come.（　　） A．determined
B．sure
C．sorry
D．glad

参考答案：

答案解析：

It took us a long time to mend the house（　　）

It took us a long time to mend the house（　　）A．build B．destroy C．design D．repair

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When the levels of cortisol go high，the hippocampusA．may expan B．may shrin C．may

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The animals in Australia are vastly different from those in Europe．A．chiefly B．g

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The international students in the US work harder than the American students．A．Ri

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Stick gold’s research focused on the side effect produced byA．memory impairmen B

分类：综合类题型：单选题