He wonders ,Must the books be returned on time 合成复合句
问题描述：
He wonders ,Must the books be returned on time 合成复合句
He wonders if the books ( ) ( )returned on time
答
must be我还想问两道：1He can`t swim,I can`t swim,either.(改为同义句） He can`t swim ( )can ( ) 2His father doesn`t allow him to fail the test.(改为被动语态）He ( )()to fail the test1 NeitherI 2 isn't allowed