问题

ou read the book, you’d better make a mark _____you have any questions

A:would open
B:opened
C:had opened
D:was to open

正确答案是：

同类题型

When my parents were young, they had to ______ several miles every day to school since they had no money to buy a bike.

They are leaving for Hangzhou in ten days-________, next Friday.[ ]

.— Have your working conditions improved— No, _____ than before, I’m afraid.

Did you enjoy the outdoor training yesterday— No, not at all. I was _________ dead after so much hard training.

r get down to your work, Jack.— _____.