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_____ussincefiveo''clockthismorning.(A)arehelping(B)havebenghelping(C)havebenghelped(D)havehelped
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
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