Question

Please call me Mary___256-7893.

1. A.
   in
2. B.
   at
3. C.
   to
4. D.
   of

Answer 1

B
试题分析：call sb at +电话号码,打某人电话，号码是……，所以电话号码前介词用at故选B.
考点：电话号码前的介词。
点评：常用的电话前的介词还有on:如call sb. on +电话号码；call sb. at +电子邮件