BEFORE _______________, THEY USED HORSE-DRAWN WOODEN CARTS
107. Before _______________, they used horse-drawn wooden carts.
A. farmers have had tractors
B. tractors owned by farmers
C. having tractors farmers
D. farmers had tractors
107. Before _______________, they used horse-drawn wooden carts.
A. farmers have had tractors
B. tractors owned by farmers
C. having tractors farmers
D. farmers had tractors