Once Johnny starts painting a picture, he won"t stop until it
来源 :焚题库 2021-04-13
中单项选择题 【2018年真题】Once Johnny starts painting a picture, he won"t stop until it______.
A.had been finished
B.was finished
C.is finished
D.will be finished
正确答案:C
答案解析:本题考查时态与语态。句意:一旦约翰尼开始画一幅画,他不画完是不会停下来的。not。until。引导时间状语从句时,从句不能用将来时,主句为一般将来时,从句用一般现在时。it指代 picture,与 finish是被动关系,故应使用被动语态。故本题选C。