题目内容：

Good morning, everyone,

I am Li hua from Xingguang Middle School. The topic of my speech is “Let’s Ride Bicycles”.

As 1. ______ (know) to us all, 2._______ the improvement of people’s living standards,

cars 3.______(become)a popular means of transport, 4.______ (bring) great convenience to our life. 5._______, they have also caused some problems such as air pollution and traffic jams.

How can we solve the problems then? As far as I 6.________(concern), bicycles is a good solution. For one thing, bicycles don’t need any petrol and they are energy-saving. For7.______ , bicycles are8.___________ (environment) friendly because they won’t give off waste gas. What’s more, riding bicycles is a good way for us to exercise and it is beneficial to our health.

9.________, let’s take the10. ________(responsible) to build up a carbon city by riding bicycles.

Come on and join us!

Thank you!