______ he talked with her for a long time, he failed to convince(说服)her.
The problem is________difficult that nobody can work it out.
—Smoking is bad for your health.—You’re right.I decide to________.
—How did he use to go to school?—By bike.But now he’s used to________to school.
Do you know the man________is talking with the teacher?
My pocket money________,so I wanted to find a part-time job to get more money.