Nowadays,many experts have___rewarding the children for their good behavior
---I’m going to Vietnam?---How long ___ you___ in Vietnam?
I tried to persuade him not to keep in touch with her, but what I said was always ______.
The Great Wall is ______ tourist attraction that millions of people pour in every year.
This is the reason ______he didn't come to the meeting.
---Alice, why aren’t you at work today?---I ________a day off.