— Beijing is well worth visiting. I _____ there with my parents during the holidays.— I agree. I have been there twice.
After _________ seemed like hours, a nurse wheeled Doris out of the emergency room.
---I am going to the supermarket to buy a quilt. --- ________ You can easily buy one on the Internet.
The doctor persuaded him to _____ smoking. A throw away B put out C give up D take away
That boy spent much time _____ computer games. A play B playing C played D to play
I am too tired. I _____ my homework all morning. A have been doing B did C do D have done