Robin is going to____on the grass.( )A.sitting B.sit C.sits
( ) 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
( )The balloons _____ flying away. A. is B. are C. do