口语应用：在下列的括号中填上适当的话语,使对话完整正确
A:Hi,John!There will be a cycling race in our city in the afternoon.
B:1( )Well you take part in
A:Of cuurse .Can you go with me?
B:2( )
A:Why?
B:Because my parents will take me to Beijing tomorrow.Imust go home to prepare my tjings.
A:3( )How Iwish you could join us!
B:4( )But Iwill join you next time.Ihope you have a nice trip.
A:Thank you .
B:Whhen you ride a bike,you mush you 5( )and Iam sure you will win.
When you ride a bike,you mush you be careful.Iwish you 5( )and Iam sure you will win.