I won’t be able to answer any phone all the afternoon．I a conference．A. am attendB. was at

问题补充：

I won’t be able to answer any phone all the afternoon．I a conference．

A. am attend

B. was attending

C. will be attending

D. will have attended

答案：

A. am attend

B. was attending

(答案→)C. will be attending

D. will have attended

解析：可联系答.案.网客服索取。