It’s a good idea _____ a pen friend to practise English.
-Leave the windows open.-______.
-Is Mary in the library, Tom?-No. She ______ with her friends.
There is a river around our town. It is about ______ long.
There ______ a football match on TV this evening.
-This is Lucy speaking. Can we ______ snacks to the party?-No, we can’t.