---- Putting on a happy face not only helps us make friends but also makes us feel better. ---- _______.
Not only his parents but also his brother ________ to the Summer Palace. They haven't been back.
You'd better do it ________ your mother did.
______ they are brothers, they don't look like each other at all.
--- When did you know the news? --- I knew nothing about it _________ my friend told me.
The question ______by us soon.