Is the blue ruler _______? —No. _______ ruler is red.

The workers were made ______ all day and all night by bosses in the old days.

Let’s go to the Tian’anmen Square by taxi. –Oh, it’s not far from here. We_______ take a taxi.

The terrorists（恐怖分子）in Xinjiang ______ last month.

______ do you go to bed in the evening? [ ]