The scientist’s last words _________us thatwe should protect the environment around us.

_______the danger from enemy attacks, people had to face the lack of food, clothing, fuel and almost everything.

er than____ on a crowded bus, he always prefers _____ a bicycle.

_____ it was very cold, _____ my friend still went swimming in Jialing River this morning.

I like her bright ___ eyes and they make her ___ really pretty and kind.