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My friend ______ (invite) me to join the art club, and I accepted it with pleasure.
12个月前
She said that ______ (加入) the English club was the best way to improve your English.
1年前
Her younger brother is _____ young to go to school. [ ]
1年前
1年前
______分为晶体和非晶体两类,晶体和非晶体的一个重要区别是:______有一定的熔点,而______没有一定的熔点,同一种晶体的熔点和凝固点是______的.
1年前