问题

____seems very hard to reach the top of the mountains.
A:That
B:This
C:I
D:It
B:This
C:I
D:It
正确答案是:
同类题型
The teacher found him ________ and gave him some different homework to do every day.
No matter how ______,scientists are eager to know more about it by exploring.
He is late _____the meeting yesterday. [ ]
“There is ______ in today’s newspaper, so you needn’t read it,” the father says to his son.
Shall I tell you about it? —No, you _______. Sandy has told me already.