Câu 4 : Over 1500 new houses _______ each year. Last year, 1720 new houses ____
A. are built/ were built B. were built/ were built
C. were built/ were being built D. are building/ were built
Bạn đang xem câu 4 : - KIEM TRA 1 TIET LOP 12 LAN 1 CO DAP AN
