When I meet difficulties, my mother always tells me __________ in myself and not to give up.

Look! There is a big river. Let’s swim in it!—No, I think it’s _________ dangerous.

When did you borrow the English book? — I borrowed it last week. I _________ it for a week.

Thank you for ________ the class trip.

It is impossible for anyone_________ them before, because Mr．Newman had them developed today．