He _____ some French while he was away on a business trip in Paris.

Learning to write is learning to think. You don’t know things clearly _________ you can writethem down.

Rather than________to the park，I would prefer to spend the weekend at home.[ ]

____ are you going to be ____ you grow up

The open university was started in order to help those who _____ having a university education when they were young.