Tom sits in front of Li Lei, so Li Lei sits Tom. A. next to B. before C. behind
They were________their invention.They thought they could invent more things to make our life easier.
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.