---How do you study ____the final test?---I study ____ working with a group.
---Mary, how much did you ______ the new watch? ---300 yuan.
---Linda, how is your physics project _______? ---Very well. I’ll finish it tomorrow.
I hope _______more robots to help people in the future.
---If there are _____people driving, there will be ______air pollution. ---Yes, the air will be fresher and cleaner.
I didn’t believe he could drive ________he told me.