Her remark was followed by an (embarrassed) silence.
A. 高兴的
B. 生气的
C. 郁闷的
D. 尴尬的
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There are about 30 000 (species) of fish in the world.
A. 种类
B. 项目
C. 环境
D. 价钱
I regret that I am unable to accept your kind (invitation).
A. 认可
B. 邀请
C. 欣赏
D. 方法
She mixed the (flour) and water to a smooth paste
A. 面粉
B. 配料
C. 辣椒
D. 食盐
(Roughly) speaking, we receive about fifty letters a week on the subject.
A. 整体地
B. 尴尬地
C. 粗略地
D. 愉悦地