题目内容
________ finishing his homework, he went out to play football with his classmates.
答案:
解析:
提示:
解析:
On或Upon
提示:
on/upon doing sth.意为“一……就……”。
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题目内容
________ finishing his homework, he went out to play football with his classmates.
On或Upon
on/upon doing sth.意为“一……就……”。