题干
You may___________he will come here to give us a hand.
A：rely o
B：rely on it
C：rely on that
D：rely on it that
答案(点此获取答案解析）
D
A：rely o
B：rely on it
C：rely on that
D：rely on it that
s，那么它从斜面中点到顶端所用时间为（ ）