英语关于时态的选择题
Dinosaurs are though to_____millions of years ago.
A die out
B have died out
C having died out
D dying out
选择什么好呢?我选择了A
人气：173 ℃ 时间：2019-10-02 07:49:49
解答
答案是B,在这里是固定结构ab/sth be thought to have done sth:某人或某事被认为曾经做了---用to have doone的原因是后面的millions of years ago.
本题的意思是：恐龙被认为几百万年前就已经灭绝了.
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