1.单选题- (共3题)
1.
-There______many trees at the foot of the mountain.
--But now they are slowly disappearing because of human activities.
A. is used to
B. used to
C. used to be
--But now they are slowly disappearing because of human activities.
A. is used to
B. used to
C. used to be
试卷分析
-
【1】题量占比
单选题:(3道)
-
【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:0
5星难题:0
6星难题:3
7星难题:0
8星难题:0
9星难题:0