题目内容
They were singing an English song at this time yesterday.
(用often代替画线部分)They ________ ________ an English song.
答案:often;sing
解析:
解析:
|
often 常用于一般现在时态中。 |
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题目内容
They were singing an English song at this time yesterday.
(用often代替画线部分)They ________ ________ an English song.
|
often 常用于一般现在时态中。 |