They_____us since five o'clock this morning.(A)are helping (B)have beng helping (C)have beng helped (D)have helped

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They_____us since five o'clock this morning.(A)are helping (B)have beng helping (C)have beng helped (D)have helped
They_____us since five o'clock this morning.
(A)are helping (B)have beng helping (C)have beng helped
(D)have helped

They_____us since five o'clock this morning.(A)are helping (B)have beng helping (C)have beng helped (D)have helped
b 因为是从今天早上五点到现在还在帮助我们
而且 有since 提示
所以用现在完成进行时

B

They_____us since five o'clock this morning.(A)are helping (B)have beng helping (C)have beng helped (D)have helped since 英文名读音/fi:fi:/,求拼写 sci-fi movies是什么意思? Wi-Fi怎么读? wi fi 怎么念 Hi Fi是什么意思? Hi--Fi是什么意思啊 ? Hi-Fi 是什么意思? Hi-Fi怎么读? WI-FI是什么意思? HI－FI是什么意思? Hi-Fi是什么 HI-FI怎么读 WI FI是什么意思 Wi一Fi是什么意思? wi-fi如何使用 EYE FI怎么样