–How do you travel to school every day? –I go ____ bus.   

We have been in No. 7 Middle School ____ three years.    

A. since   B. in   C. for

Hainan celebrated（庆祝）her twentieth birthday ____ April 26,

2008.   

A. in   B. at   C. on

–What do you call this in English?

–It’s stamp. It is used ____ sending letters.

Nobody can stop me ____ working hard at English.    

Our sports meeting has been ____ till next Monday because of

the bad weather.

Do you know the young lady ____ your mother is talking?

Tim’s mum is worried ____ her son’s eyesight as he plays

online games too much.

All the cups are made of glass ____ the green one. It’s made

of metal.

Here are some flowers ____ you ____ our best wishes.