Some volunteers from Beijing arrived in Shanghai_____ April 29 to work for the World Expo.[ ]
It is known to all that every minute ____ full use of____ the lessons will benefit students a great deal.
China is larger than _________ in Africa.
Where is my pen ? Have you seen ____?— Oh, sorry. I have taken ____ by mistake.
“______ do you like? The yellow one ______ the white one?” “The yellow one.”