23. Tom had to be told two or three times ________ he could remember what the teacher said.
Go anywhere in China on________ clear day in springtime and you’re bound to see people flying ________kites. It’s a favorite outdoor activity in China.
--- Some more wine? --- Thank you. ______. I have to drive home.
The evidence has ______ the first witness’ story.
In these years, the shortages of water has become a ______ problem.
---______ he have been chosen as captain of our school football team? ---Yes, he______. Can’t you see he’s wearing an armband?