EachyearintheUnitedStates,manyblackteenagers_______ofschool,eitherbecausetheycannotkeepuportheyhavetoworktosupporttheirfamily.
A、gooutTheboyranoutoftheclassroomwithouttheteacher's_______.
Othersarguethatsincetheearthhasenduredalongstringoficeagesinthelasttwomilliontothreemillionyears,anywarmingis________tobetemporary.
Idon'tknowhowwecanmake________onthetimetableforanymorecourses.
Aftersomanydayswithoutrain,thegroundquickly________thelittlerainthatfelllastnight.
Becareful,_______you'llfalldown.
