It’s difficult to live in a foreign country if you don’t speak the languageA. importantlyB

问题补充：

It’s difficult to live in a foreign country，if you don’t speak the language

A. importantly

B. naturally

C. especially

D. usually

答案：

A. importantly

B. naturally

(答案→)C. especially

D. usually

解析：

这题考查副词的用法：importantly重要的是naturally自然地especially 尤其是usually通常，C项符合句意：在外国生活很困难，尤其是如果你不懂它的语言。