1)if he (learn) to drive he would be able to drive his car
2)they will lose their way if they(not have) a map
3)if students (attend) quoc hoc high school they have to wear uniform
4)frogs and toads(die) a lot if people continue to use electricity to catch fish
5)if lan(not have) a bicycle she will not go camping with us
6)his father would buy that house if it (not be) expensive
7)if students do not throw away plastic bags carelessly our school yard(be clean)
8)i would do the test in five minutes if it (not be) difficult