The manager was worried about the press conference his assistant in his place but luckily

问题补充：

The manager was worried about the press conference his assistant in his place but ,luckily ,everything was going on smoothly.

A. gave

B. gives

C. was giving

D. had given

答案：

A. gave

B. gives

C. was giving

D. had given

解析：C【命题动向】考查动词时态。

解析一：根据下句but luckily，可知之前经理担心他的助手正在代替他召开的媒体招待会，故用过去进行时。

解析二：句意为“经理当时很担心助理替他主持的记者招待会，所幸的是一切进展顺利”，根据语境排除B项；结合上下文应是当时在举行的记者招待会，故选C项。