如图放置的△OAB₁，△B₁A₁B₂，△B₂A₂B₃，…都是边长为2的等边三角形，点A在y轴上，点O，B₁，B₂，B₃…都在直线l上，则点B₂₀₁₇的坐标是____．

全面建成小康社会，要坚持和完善民主集中制的人民代表大会制度，不断扩大人民民主；要坚持开放、合作、共赢，争取有利的国际环境。

根据句意和首字母提示，补全单词
（1）He wants to see the new movie, so he needs to buy the t ____  first. .
（2）It’s raining hard outside. If you go out, please take the u____   with you.
（3） There is a new b____ over there and you can buy many new books.
（4） Take the e____   to the second floor and you can see a drug store.
（5） When you c____    the street, you must be careful. The traffic is busy.