Question

The continuous cycling of water among _______ three forms _________ the total amount of water on the earth constant even when the whole world is using it.

strong >Each question below has two blanks, each blank indicating that something has been omitted. Choose the set of words for each blank that best fits the meaning of the sentence as whole.
A their, keeps
B their, keeping
C it, keeps
D them, keep
E its, keeps
Practice Next

Hey! Ask a query