—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.
A. may,when
B. would, why
C. will, how
D. shall, why
网友回答
(答案→)A. may,when
B. would, why
C. will, how
D. shall, why
解析：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。