He said Mary couldn't come because she was ill that day.（改为直

Mary didn't go to school because she was ill.(改为同义句) he didn't come yesterday because he was ill. it was because he was ill that he didn't come 为什么要用that而不用wh He didn't come because he was ill.=He didn't come because of He didn't come to school because he was ill对because he was i He was ill.That's why he didn't come he couldn't go to work because he was ill同义句 He couldn't go to the Swimming Club because he was ill 同义句 She didn't come to school because she was ill (改同义句) He said that he was young （ ） he couldn't carry the heavy bo He didn't come to school yesterday (because he was ill) ）.如何 He didn't come to the evening party because he was ill.【对 be