According to ______ survey，there’re more and more young people who go for a walk at ______ dusk instead of sitting in front of the computer.

use is on the top of the hill, and in winter the winds ________ be very cold.

Do you like shopping with your mother—I can’t stand it! She often shows me around the store, but we buy ______.

I would have come earlier, but I _____ that you were waiting for me

The researchers have discovered __________they believe to be a new species.