( ) 1.Jack’s father is -------- doctor.A.a B.an C.some D./ (

( ) 1.Jack’s father is ________ doctor.A.a B.an C.some D./ ( ) 2.He often does some washing ______ Sunday.A.at B.in C.on D.by ( ) 3.This room is ours,and that one is ______.A.they B.them C.their D.theirs ( ) 4.He did not go home_____ he finished the work.A.if B.because C.until D.since ( ) 5.There ________ many buildings in this city.A.is B.are C.have D.has ( ) 6.I ________ when she knocked at the door.A.cook B.cooks C.was cooking D.am cooking ( ) 7.Do you know________?A.where does he live B.where he lives C.he where lives D.he lives where ( ) 8.I’ll go with you if I ____ free tomorrow.A.will be B.shall be C.am D.was ( ) 9.The teacher’s office was ________ students.A.filled B.filled of C.full of D.full with ( )10.I invited Tom and Ann to dinner,but _______ of them came.A.neither B.both C.all D.none ( )11.I ________ in the back of the classroom.A.was sat B.sitting C.was seated D.seated ( )12.I’m hungry.Please give me________.A.two pieces of breads B.two piece of breads C.two pieces of bread D.two piece of bread ( )13._____ you finish your homework last night?A.Did B.Will C.Are D.Were ( )14.We have waited for you ______ a long time.A.for B.since C.at D.in ( )15.We haven’t seen him _____ yesterday.A.when B.since C.for D.in ( )16.You ________ do such a thing.A.had better not B.have better not C.had not better D.had better not to