My uncle lost his ID card yesterday. ______, a boy found it and gave it back to him last night. 

--- Credit cards are       useful when travelling.—True. They save us the trouble of taking too much cash.

He dived_______into the river to save the girl and I was ______ moved by his deed.

As is known to all language learners, the newly learnt words will soon be forgotten unless ______ used in everyday communication.

—Have you finished your project, Alice? —I’m afraid I       forgot about it.