THINGS ________ CLEAR TO THEM SO THAT THEY CAN DO THE WORK IN THE...

18. - ON TAP KIEM TRA 1 TIET SO 2 18. - ON TAP KIEM TRA 1 TIET SO 2
ON TAP KIEM TRA 1 TIET SO 2

18. Things ________ clear to them so that they can do the work in the way that you have told

them.

a. are making

b. ought to be made c. have made

d. needn't be made