The small river in front of my house was dirty before,but it is clean now.
The small river in front of my house was dirty before,but it is clean now.
填三个空:The small river in front of my house---------- ------------ -------------dirty before.
填三个空:The small river in front of my house---------- ------------ -------------dirty before.
英语人气:249 ℃时间:2020-05-20 07:23:44
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used to be
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