填空题

When (see) （）through a telescope, the sun appears darker near the edge.

【参考答案】

seen

<上一题目录下一题>

热门试题

填空题

Note that smoking (forbid) （） during the plane takes off.

单项选择题

A、 She does not take enough money.
B、 She does not like the books.
C、 She plans not to take the classes.
D、 She did not see the list of books.