---Look, Maria! The newspaper says the world has a population of 6.8 billion.----Yes. And it is increasing___________ 80 million every year.A. to B. in C. by
-- I haven’t seen you for a long time. How’s it going? -- ____________.
Don’t copy others’ work. If you do it by ________, you’ll feel much better.
You won’t feel happy at school _________ you get on well with your classmates.
I am looking after little Tom today. He’s been in my house _________ 8:00 this morning.
-- My favorite TV _________ is A Bite of China (舌尖上的中国). --We like it, too. My mother often cooks delicious food after watching it.