(2018唐山路南区一模)The girl w________ long curly hair is my classmate in the college.
(2018邯郸一模)Don't worry！I think the problem can be got over w________ too much difficulty.
(2018张家口桥西区一模)These books are o________ sale, so you can choose some you need.
(2018河池改编)You can improve your English b________ listening to English songs.
(2018宿迁改编)As a wonderful volleyball player, Zhu Ting is known to people all o________the world.
(2018常德)—When is Mike's birthday?
—His birthday is ________ April 21st.
