选B.是别人说DA VINCI干过的事。
1. According to somebody2. How are things going on now?3. A product is processing now.
It is said that````
someone said that....how things going?some stuff is in process....绝对口语化 不是书面语...
1.Hearing from2.How it going?3.It is processing.
he said
B，A是进行时，这件事是他做过的，所以是完成时，要用b。他是被说，所以是被动的嘛，cd都不对了
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