You look so tired. Why ____________ to have a rest ?
Thank you for helping me a lot.I am________to you.
The students are full of energy.They are thirsty ________knowledge.
—Excuse me,can you tell me________?—Sorry,I don’t know.You can go to the information desk.
My mother prefers to take a bus to her office________she has a car of her own.
She wants to________her job and go to study in Australia.