He asked his neighbor to ________ his house.

选择一项:
A. keep an eye on
B. keep their eyes on
C. keep their eyes open
出自:人文英语3

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块