很高兴为你解答.
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正确答案是：
(1)Two years ago,he【 was 】very short.But he 【 is 】tall now.
(2)The wind and the sun are【quarrelling】in the sky.
(3)Who【 gives】you the present for your birthday?
(4)The students must【keep】quiet in the ilbrary.
(5)Look,grandma【 is sleeping】
(6)【 Does】your mother【wash】the dishes every evening?Yes,she【washes】the dishes after dinner.
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