①参加…
②从…学到很多
③在过去
④详细地描述
⑤负担不起孩子们的教育
— He swimming.
— . I'm very timid(胆小的).
—Yes, I _____ it ten minutes ago.
—What a pity!
, many families were and .
Now our country's economy .
My brother has .
I had no time travel, I still felt very happy this holiday.
support her family, she has to drop school.