Isn't it about time you _____ to do morning exercises? [ ] A.havebegun B.begin C.hadbegunD.bega

题目简介

Isn't it about time you _____ to do morning exercises? [ ] A.havebegun B.begin C.hadbegunD.bega

题目详情

Isn't it about time you _____ to do morning exercises?
[      ]
A. have begun 
B. begin
C. had begun
D. began 
题型:单选题难度:中档来源:陕西省模拟题

答案

D

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