问题

Not until all the fish died in the water _____ how serious the pollution was.

A:did the villagers realize
B:the villagers realized
C:the villagers did realize
D:didn’t the villagers realize

正确答案是：

同类题型

Good, you’ve done it well! You need no more help from us, ______.

press the red button ,_______you will setoff the alarm.

26．______life began on the earth is one of the biggest puzzles to scientists

Do you believe you read in the newspaper— No, only of them.

The time is not far away _______the information will be made known ______ more workers will be trained fortheir jobs