合并句子all can be done.all must be done
合并句子all can be done.all must be done
用what或者who合并句子all can be done.all must be done
All can be done. All must be done.合并为一个句子怎么写? 为什么?
all ( ) can be done must be done.
all that can be done been done.
All that must be done----(do)
All that can be done _______(be)done
all that can be done has been done
Has all that can be done been done?
all that can be done has been done.
can be done was done could be done must have been done will
All that can be done __been done.请问该用has还是 have?