would you please tell me _ a.what to do b.how to do it c.when to _英语解答

would you please tell me _ a.what to do b.how to do it c.when to do d.how to do

人气：173 ℃　时间：2019-08-20 19:51:00

解答

这一道题除了D 其他的都可以选得看看上下文是怎么样的.(⊙o⊙)…，没有上下文