We tried to ______ the nervous old lady that flying was safe.

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问题 We tried to ______ the nervous old lady that flying was safe.

选项 A、secure
B、ensure
C、assure
D、certify

答案C

解析 本题考查动词辨析。assure sb. that. . . “向某人保证…”;secure(adj. )“安全的”;ensure“确保”和certify“证明,保证”没有这样的搭配。句意为:我们努力向这位紧张的老妇人保证飞行是安全的。
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