对学前儿童来说，起初是接触父母、亲属、邻居，以后接触（）、同伴、逐步涉入社会，参与各种活动。
A.教师
B.同学
C.朋友
D.儿童
参考答案：A
— Peter! How are you getting on with your studies?
— Well, my grades have gone down, not too much, but _____ to make my mom disappointed. [ ]
A. rather
B. well
C. badly
D. enough
By the end of last month, I _____ all the CDs of Justin Bieber. [ ]
A. collect
B. collected
C. have collected
D. had collected
