—John,you （ ）go out to play until （ ）your homework .—OK,Mum.

题目

—John,you （ ）go out to play until （ ）your homework .—OK,Mum.
A.must; finishes
B.can’t; is finished
C.can’t; has finished
D.needn’t; finishes
为什么选B,不能选C
—John,you （ ）go out to play until your homework （ ）
—OK,Mum

答案

首先,你以后学习一定要认真,刚才由于你不认真,我说的有点严重,望理解你这题让你抄错了,原题是这样的.—John,you （ ）go out to play until your homework （ ） .—OK,Mum.答案：B.解析：第一个空用can't 表示不可...