The river near our school u________ to be clean,but now it becomes dirty.
问题描述:
The river near our school u________ to be clean,but now it becomes dirty.
答
正确来说你的 "become” 用错了..
正确的是: The river near our school used to be clean, but now it BECAME dirty.
答
used
答
used
短语知识:used to 意思是 “过去是……”
翻译:我们学校附近的河曾经是清澈的,但是现在变的浑浊了.