They_carefully,but they didn't_____anything.A.listened;listen B.listened;hear C.heard;hear

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They_____carefully,but they didn't_________anything.
A.listened;listen B.listened;hear C.heard;hear

B 他们听得非常仔细,但是他们什么都没有听到.
listen 表状态,hear表结果

gers_. A.to smoke;to smoke B.smoking;smoking C.to smoke;smoking D.注意somebody哦~ 希望有帮助啊~ permit后面要接现在分词

They_____carefully,but they didn't_________anything.A.listened;listen B.listened;hear C.heard;hear b b, b b (b, B b b B b. b b b b b 求下列行列式 a b b b b a b b b b a b b b b a 计算a+b/b-a-b/b