I think _______is meaningful tohelp other people.

Not until he lefthis home ______ to know how important the family was for him.

Courage is a kind of quality — and that’s __________it takes to face the challenges in life.

There somany foreigners in the streets these days.– They might be runners in the Yellow River Estuary (入海口，河口) International Marathon.

________at the cafeteria before, Tina didn’t want to eat there again.