—I don’t know________.—Because he has to look after his mother.
Do you know____?
My sister is only five, but she always tells me ____ my pictures are good or not.
Mum, I’m afraid I can’t _____ them in the match.
The police warned us ______ possible danger.
If you can’t find your pen ,I would like to _____my pen to you. A showB lendC borrowD keep