双基限时练(十七) module 6 section ⅱ ⅰ.单句语法填空(不多于3个单词) 1．teenagers should concentrate ________ their studies though there are a lot of attractions around them. 答案 on 2．in western countries, the young people are more independent ________ their parents. 答案 of 3．white color is very ________ (fashion) at the moment.
