当你想知道钢笔放在哪儿时,问:A. Where is the eraser?B. Where is the pen?C. Where is it from?
( ) What ____ mess! A. a B. an C. the
( ) My _____ are falling. A. book B. books C. pen
( ) But look ____ the balloons. A. in B. on C. at
()Come and _____ us! A.help B. helps C. helping
()I can _______ this box. A. carries B. carry C. carrying