用适当的介词填空my sister will come back()two o'clock.autumn comes()

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正确答案：
My sister will come back( at )two o'clock.
autumn comes( after )summer.
help yourself( with )some apples.
there is plenty( of )rain( in )the south
we must be careful( about )your pronunciation.
please look out ( of )the maths.
there is a river( between )these two cillages.
( On )the morning of may1,they arrived( in )england.
( On )the way,do you know where li ping is?
there are many apples( in )the tree.
what's wrong( with )your radio.







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my sister will come back(after)two o'clock.
autumn comes(after)summer.
help yourself(to)some apples.
there is plenty(of)rain(in)the south
we must be careful(of)your pronunciation.

my sister will come back(in )two o'clock. 在2点钟后。
autumn comes(before 在…… 之前)summer.
help yourself(to )some apples. 固定用法 help oneslef to sth
there is plenty(of )许多 rain(in 在)the sout...