7.They needn't worry because there is (18)____ (19)______room in the car. In the mountains,(20)____ (21)______ can change very suddenly. Lisa has got the guidebook in her(22)_____. Lisa will have some great experiences to(23)______ (24)_______. They'll buy some local(25)_______ when they get there.
6.13.Kids around the world have been asking"why do we need to learn maths"for years. 14.Visitors can control the robot with the help of math skills at one exhibition station. 15.There are 37activities designed to teach kids how maths is used in everyday life. 16.The exhibition will visit 15cities in the next ten years. 17.Maths is used widely in our daily life.