Simple Present, Present Continuous, Simple Past

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Let's go out. It ... (not/rain) now.

• isn't raining

• doesn't rain

• didn't rain

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Hurry up! Everybody ... (wait) for you.

• is waiting

• are waiting

• waits

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"... (you/listen) to the radio?" "No, you can turn it off."

• Are you listening

• Do you listen

• Did you listen

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The River Nile ... (flow) into the Mediterranean.

• is flowing

• flows

• flowed

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A: How's your English?

B: Not bad. I think it ... (improve) slowly.

• is improving

• improves

• improved

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Can we stop walking soon? I ... (start) to feel tired.

• am starting

• start

• started

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Who is that man? Why ... (he / look) at us?

• is he looking

• are he looking

• does he look

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Alan says he's 80 years old, but nobody ... (believe) him.

• believe

• believes

• is believing

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I ... (think) of selling my car. Would you be interested in buying it?

• think

• am thinking

• thought

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Air ... (consist) mainly of nitrogen and oxygen.

• consist

• is consisting

• consists