About 56 ____ people live in this country.
I used to go camping a lot, so it isn’t the first time I ____in a tent.
Walk _____ the river, then go _____ the trees, you can see a new zoo.[ ]
Beijing has improved a lot these years. —- _______ and ________.
There’re ______ fish in the pond( 池塘). They’re very lovely.