Smile at the world，______the world will smile back to you．（ ）
A．butB．andC．orD．though
How do you improve your ？
By listening to a tape and repeating out loud．（ ）
A．pronunciationB．environment
C．invention
What's matter，Nancy？ I have sore throat．（ ）
A．the；theB．the；aC．/； a
I wonder_______________．
Well， I think Qingfeng Lake Park is a good choice．（ ）
A．what I shall sell at my street stall（货摊）
B．whom I could open a street stall with
C．if I can open a street stall after work
D．which is the best place for a street stall
By the end of 2025， garbage﹣sorting systems （垃圾分类系统） will be ________in Dongying．（ ）
A．set upB．given up
C．shut offD．brought out
We should _________to buy products that come from wild animals． A large number of them are in danger．（ ）
A．stopB．decideC．refuseD．continue