When I came in,he was just -- to jump up.A.atB.on C.for D.about 为_英语解答

When I came in,he was just -- to jump up.
A.at
B.on C.for D.about 为什么?

人气：345 ℃　时间：2020-01-15 09:58:13

解答

选D
about to 表示即将发生
我进来的时候,他正要跳起来．