Would you like some bread?A.No,I don't B.Yes,please C.sorry
There____a pen and a ruler on the desk.
Listen,some birds are ____in the tree.
人气：104 ℃ 时间：2019-08-18 20:50:18
解答
B (Yes,please./No,thanks.)
is (就近原则.离a pen近,因此用单数形式is)
singing(现在进行时,be+动词ing形式）
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