改錯1.I fell asleep and didn't at least hear the phone call.2.That's the difficulty we have protected our earth from pollution.
熱心網(wǎng)友
at least改為at allprotected改為protecting,因為have difficulty in doing something,in可以省略
熱心網(wǎng)友
at least 好像是at all吧have protected 是had protected吧
熱心網(wǎng)友
很遺憾不能幫你