“你正在做什么?”如何表达:A.What are you doing? B.What do you do ?
( ) I can see toy horse and a ball. A.an B.a C.the
( ) it Shanshan’s ruler? A.Are B.Is C.Do
( ) Please someone me. A.help B.helps C.helping
( ) You can’t bring it school. A. of B.to C.for
( ) Which your umbrella? A. do B did C.is