Someperson callingforyouatthegate.A. areB. isC. isbeingD. willbe

问题补充：

Someperson callingforyouatthegate.

A. are

B. is

C. isbeing

D. willbe

答案：

A. are

(答案→)B. is

C. isbeing

D. willbe

解析：someperson指“某人”是第三人称单数。