问题补充:
Is dangerous to swim in the river alone?
A. it
B. this
C. that
D. he
答案:
(答案→)A. it
B. this
C. that
D. he
解析:本句it为作形式主语,不定式短语放在后面作真正主语。
时间:2020-11-11 04:59:52
Is dangerous to swim in the river alone?
A. it
B. this
C. that
D. he
(答案→)A. it
B. this
C. that
D. he
解析:本句it为作形式主语,不定式短语放在后面作真正主语。