The students _________ follow the school rules at school.
We were swimming in the lake _______ suddenly the storm started.
The price of petrol(汽油) is not _______ that of last year, so some more people are planning to buy cars.
Everybody should study hard. No one can _______ us _______ a good future.
There’s water all over the kitchen. You’d better _______ right away.
I saw a number of pancakes in the plate, but now there is _______ left in it.