1i have some exciting news to tell you!(to tell)
2it takes me two hours to finish the homework(to finish)
3it's too far to cycle(to cycle)
4There are ither colors for us to choose(to choose)
5it's hard to say(to say)
重点说原因~··· 谢谢
如果不想阐述原因的,可以不用说 ,我自己再慢慢琢磨、、、