16.--- I’m not good at singing, you know. ---_________. It’s just for fun.
The waiter greeted me with a big smile and _____ us by the window.
She was staring out over the lake,_____ in thought.
It can be cheaper to buy a new washing machine than to get your old one _____.
He started to explain, but she cut him short,_____ she had to catch a bus.
_____ back problems, always bend your knees when you lift heavy objects.