---How old can you guess your new English teacher is ?--- It’s hard to say. But I guess him to be _____between 35 and 40.
_____ many times, he finally understood it.
At the eve of Christmas, she got nothing but $ 2 ____ to buy her husband a simple present.
_____ private cars bring us convenience, they also cause more traffic accidents and pollution.
______ around the Water Cube , we were taken to see the Bird’s Nest for the 2008 Olympic Games.
Her book didn’t ____ children probably because she employed too many scientific terms.