问题
连词成句
Make sentences. (连词造句)
1. grandpa is my This
2. crayons many you How have do
3. you from Where are
4. duck funny a What
5. too meet you Nice to
答案
1. This is my grandpa
2. How many crayons do you have
3. Where are you from
4. What a funny duck
5. Nice to meet you, too
，遇到红灯时停留的时间都是2分钟，则李先生从家到单位的路上因遇到红灯停留的总时间至多是4分钟的概率为（）。