We all tend to think that we are safe in our homes, but_____, many homes are not as safe as they are supposed to be.
A. hopefully
B. unfortunately
C. luckily
出自:国开英语2

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