--What is Miss Gao's favourite________?--She is always in pink. Don't you know?

It’s a good habit to turn off the unnecessary lights, it can help save       .

---Are your grandparents in good _____?  ---Yes. Because they have quite _____ living habits.

– Why do you get up so early in the morning, Lingling?-- I generally make it a       to be up by 7 to read English.

—Do you have a knife?—Yes, I do. I have a big     .