They were _________ busy _________ with each other ____

试题详情及答案解析

They were _________ busy _________ with each other _________ the time.

A．too; to talk; to forget

B．too; talking; to forget

C．so; talking; that they forgot

D．so; to talk; that they forgot

答案：C

试题分析：句意：他们是如此的忙于相互谈话以至于他们忘记了时间。分析：考查固定句型so……that……如此……以至于……；同时考查固定短语be busy doing sth.忙于做某事。故选 C
考点：考查固定短语的用法。