Listen, the birds in the tree.——青夏教育精英家教网——

摘要：Listen, the birds in the tree.

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Listen! The birds _____ in the tree.

[ ]

A. are singing
B. is singing
C. sings
D. sing

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Listen! The birds _________ in the tree．

are singing

is singing

sings

sing

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Listen! The birds ________ in the tree.

[　　]

D．are singing

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Listen, some birds ______ in the tree.

A. are singing
B. is singing
C. sing
D. sings

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Listen! I hear some birds ___________ the tree.

A. sing in B. singing in B. sing on D. singing on

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