IF WE ______________ WATER CAREFULLY, MORE PEOPLE WILL HAVE FRESH...

7. - DE DAP AN KIEM TRA 1 TIET LAN ANH 8 SACH MOI
DE DAP AN KIEM TRA 1 TIET LAN ANH 8 SACH MOI

7. If we ______________ water carefully, more people will have fresh water.

A. will use

B. would use

C. using

D. use