[ Grammar ]
There are about 200 countries in the world, …?
A. aren’t there
B. isn’t there
C. doesn’t it

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A. for
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Choose the correct verb to complete this sentence:
The bluebird in the tree _____beautifully.
A. singing
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What is the commonest element in Jupiter?
A. Helium
B. Bromine
C. THERE IS NO ATMOSPHERE
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They discussed that question in … person, face to …face.
A. the, a
B. -, the
C. a, the
D. -, –
