找出画线部分读音不同的一个单词。
What grade are you in? I'm in______. A.Grade 4 B.grade 4 C.Class4
Let me______you. A.help B.to helpC.helping
Time______lunch. A.to B.for C.of
Welcome_____our school. A.to B.on C.不填
Your socks are too small Try this on. A. oneB. aC. pair
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