It sounds like something is wrong with thecar’s engine. _______, we’d better take it to the garage immediately.

Have you been here before?—- This is the second time I ______to the Great Wall

You ________ give me a lift. I want to walk home for exercise.

____ more information I needed, butmy computer broke down

_______ many of us today take the television for granted, it’s actually one of the greatest invention of the 20th century.