句型转换： To look up new words in a dictionary is a good idea.(改
句型转换： To look up new words in a dictionary is a good idea.(改为同义句)
To look up new words in a dictionary is a good idea.(改为同义句)
( ) ( ) ( ) ( )to look up new words in a dictionary.
To look up new words in a dictionary is a good idea.(改为同义句)
( ) ( ) ( ) ( )to look up new words in a dictionary.
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你能帮帮他们吗