题目内容
用恰当的连词或短语填空
1.I haven't seen him ________________ we met at the airport last year.
2.Mum, I won't go to bed ________________ you come back.
3.My grandparents were watching TV ________________ my mother was washing clothes at that time.
4.We've celebrated the important festival ________________ 1949.
5.—Mary, I'll call you ________________ I arrive in Shanghai.
—OK, see you then.
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