I feel my stomach terrible.I think I ate _____at lunch time .
We’ll go for a picnic if it________tomorrow. A won’t rain B doesn’t rain C.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.