it is a __practice to bring a present to the hostess when one is invited to dinner.

it is a __practice to bring a present to the hostess when one is invited to dinner.

题目
it is a __practice to bring a present to the hostess when one is invited to dinner.
A normal
B ordinary
C usual
D common
选哪个?理由?
答案
A normal
normal practice 通常作法;
被邀吃饭给女主人带礼物是通常作法.
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