--Where is Jim?--He ________ Chengdu.
When the first ______ came to the US, they were hungry as they have nothing to eat.
Spring is the best _______ of the year, because we can see lots of beautiful flowers.
I ________ the room yesterday, so it is not dirty today.
When the sun shines, the clouds _________ , and we can see everything much better.
The Three Gorges Dam can produce _________ for millions of people every year.