After the heavy rain,the river_______a lot.
We’ll go for a picnic if it________tomorrow.A won’t rainB doesn’t rainC.rains
Can you see the boys________football on the playground?They are my classmates.
The Greens used to live in London and now they________in Beijing.
—What’s the matter________your computer?—It doesn’t work.
The problem is________difficult that nobody can work it out.