# 2เลือกประเภทThere were people who…..travel by plane.didn’t use todidn’t used todon’t use to.doesn’t use to
# 3เลือกประเภทHow ……….travel a hundred years ago.do people use todo people used todid people use todid people used to
# 4เลือกประเภทCountries with a lot of rivers can use hydropower since it needs a lot of ……gascoalwatersunlight