We can never expect_______bluer sky unless we create_______less polluted world.
The children's excitement as Christmas drew near.
During the weekend, the health club is usually full of people to get in shape
Don't phone me between 10:00 and 11:30 tomorrow morning. I a meeting then.
1 think we'd better keep to the subject, we'11 waste our time.
—Mum, where's my packed lunch? 一In the kitchen. I you two sandwiches.