Ifyouwanttounderstandaculturebetter,itisworthspendingth...

問題詳情：

If you want to understand a culture better, it is worth spending the time ______ about their costums.

A. learning             B. to learn              C. learned       D. learn

【回答】

B

知識點：動詞和動詞短語

題型：選擇題