----What’s the matter with Timmy? ------His bike hit a rock and , which made him slightly hurt.
The topic . Let’s change it .
to his teaching work, she has no time to take care of her own child.
The sand in the river is increasing these years. We must to protect the environment.
The idea puzzled me so much that I stopped for a few seconds to try to .
Her joke went too far. It was more than I could .