In making a term that ends in -um plural, you should: a. keep ...

[imowrer]

In making a term that ends in -um plural, you should:
 
  a. keep the -um and add an -a
  b. drop the -um and add an -a
  c. drop the -um and add -ta
  d. drop the -um and add a -y

Question 2

The combining form lith/o means a(n) ________.
 
  Fill in the blank(s) with correct word

[ergserg]

Answer to Question 1

b
Explanation:
a. keep the -um and add an -a: this is not correct; drop the -um and add an -a
b. drop the -um and add an -a: correct
c. drop the -um and add -ta: this is not correct; drop the -um and add an -a
d. drop the -um and add a -y: this is not correct; drop the -um and add an -a

Answer to Question 2

stone

[imowrer]

Great answer, keep it coming

[xiazhe]

Wow, this really help