單項(xiàng)選擇題

Some people who are very intelligent and successful in their fields find _______ difficult to succeed in language learning.

A.which

B.how

C.that

D.it

編輯推薦：

2013年自考英語(yǔ)考試每日一練6.14

（責(zé)任編輯：何以笙簫默）