I have read a series of stories about some world famous great scientists, are from our country.
Sam enjoys ______ stamps.And now he has 226 of them.
He has ______ friends.He always keeps himself alone at home.
Supposing someone__________ you had been lying, what would you do?
The reason __________he gave for not coming to your birthday party is _________his mother was ill.
Nowadays, many people________about eating habits _________what they believe.