---Tom, keep your_____ on your studies. --- Sure, mum. I'll keep that in_____.

It         me that he always finishes his work in a short time. He is well-known for his working at an          speed.

 ---Does the young man standing at the gate ______ the car? --- No. The car is _________ his father.   

In almost all the colleges in our country now, college students sometimes earn enough money by ______ of part time job to support themselves.

— Do you have difficulty getting along with the new colleagues?— No. I______ quickly.