—That's true. But a small tree won't grow into a big tree      it experiences lots of winds and rains.

 (Ⅰ)

{#blank#}1{#/blank#} If I ride at night,

{#blank#}2{#/blank#} If you drive a car in Britain,

{#blank#}3{#/blank#} If I ride to school every day,

{#blank#}4{#/blank#} If you ride your bicycle in the street,

{#blank#}5{#/blank#} If everyone obeys the traffic rules,

(Ⅱ)

a. you must be careful enough.

b. I'll keep fit.

c. I should have a bike light or wear light colored clothing.

d. the roads will be safe.

e. you must drive on the left-hand side of the road.