1.look! he(?) in the classroom now. A.studying B. is studying C.studyiied
2.The shoes (?) clean yesterday.
A.are B.were C.was
3.Mr.Green (?) a basketball,but he doesn't (? )soccer.
A.haye;has B.has;has C.has;have
4.(?) they plant trees last week?
A.Did B. Do C. Does