In my pencil-box, _______ a pen, two pencils and three rulers.
After he finished ______ the exciting story, he talked about it on and on with his friends.
— ______ did you visit the Great Wall? — Last Sunday.
Roast duck is one of _______ dishes in Beijing.
I’d like to go swimming with you, ______ I am too busy today.
I ______ in the hospital yesterday. I had to look after my sick mother.