---I wonder _______.
---Why not?
---I wonder _______.
---Why not?
Traditional Chinese Medicine is a great_______ for our nation.
The earth needs 24 hours to turn round once and _______to its starting place with the sun,
There are many kinds of books in the library and you can choose_______ you like.
---I'm sorry I ______not get there on time. The traffic is heavy now.
---That's OK. Take your time.
Light and bright colors make people not only _______ but also more active.
It usually takes us quite a long time to _______ master a skill.
Students should have outdoor activities every day _______their eyesight.
Qingdao Jiaozhou Bay Bridge _______ the sea helps people travel conveniently.
Father’s love seems like ____ mountain. He always hides love deep at _____ bottom of his heart.