1. he come late, give him the message.
a. had
b. should
c. would
d. if
2. non-fat dairy products supply the needed nutrients without calories.
a. excessive
b. optional
c. additional
d. arbitrary
3. although our boss had been so unkind to us, we heaped coals of fire on his by helping him in his misfortune.
a. shoulder
b. hand
c. arm
d. head
4. the plumb line is always perpendicular the horizontal plane.