— Hello I to ask if I can book two tickets for tonight’s film.— Sorry we’ve already sol

问题补充：

— Hello, I to ask if I can book two tickets for tonight’s film.

— Sorry, we’ve already sold out.

A. phone

B. will phone

C. am phoning

D. have phoned

答案：

A. phone

B. will phone

(答案→)C. am phoning

D. have phoned

解析：考查时态，句意：嗨，我打电话咨询能否订两张今晚的电影票。--对不起，已经买完了。现在进行时be doing，代表正在进行的打电话的行为，根据语言环境需要用现在进行时。选C。