My parents always go to work_____7:20 a.m. A. in B. on C. at
( ) --- are those? --- They’re boats. A.What B.Where C.How
( ) Those are . A.tree B. flower C. flowers
( ) These green trees. A. is B. are C. was
( ) The birds are playing the rain. A. on B. in C. at
( ) Baby, please to your room. A. going B. go C. to go