屠呦呦获得2015年诺贝尔医学奖是每个中国人的荣耀.
It is the honor of every Chinese for Madam Tu Youyou to the Nobel Prize for in the year of 2015.
People often fly kites on sunny and (多风)days.
污染如此严重,人人都应该出一份力来制止它.( so…that )
我记得在七年级时见过你们所有的人.( remember doing )
当陌生人遇到麻烦时我们应该帮忙吗? ( should )
No matter how hard your situation is, you had better not give up.