Mr Li’s students can call him 57684051 or e-mail him lihua@sina.com.A. at; atB. for; onC

问题补充：

Mr Li’s students can call him 57684051 or e-mail him [email protected]

A. at; at

B. for; on

C. at; on

D. in; at

答案：

(答案→)A. at; at

B. for; on

C. at; on

D. in; at

解析：call sb at 号码，at 后接e-mail ，故选A