We were watching TV when suddenly there was a ____ on the window.A. tipB. tapC. lapD. sap选什么,为什么呢?
问题描述：
We were watching TV when suddenly there was a ____ on the window.
A. tip
B. tap
C. lap
D. sap
选什么,为什么呢?
答
tap
轻轻敲打
答
B 我们正在看电视的时候突然听到敲打窗户的声音
tip 倾斜、小费
lap 衣服下摆
sap 坑道