Question

—How about paying a visit to Mr. Richardson, our former history teacher?
—Good idea. I will e-mail him today so he ___ know ___ to expect us

1. A.
   may,when
2. B.
   would, why
3. C.
   will, how
4. D.
   shall, why

Answer 1

A
may用在so、so that、in order that后常表目的。“我”给他发封 e-mail，这样他就可以知道什么时候接我们了。故选A。