We have been in No. 7 Middle School three years. A. since B. in C. for——青夏教育精英家教网——

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.

–What did you get ____ your mother ____ Mother’s Day?
–A beautiful card with “Thank you, Mum”.

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