blueseas wrote:
Restorers say that if allowed to remove and replace the discolored layer of varnish on the Mona Lisa, the colors Leonardo da Vinci painted nearly five hundred years ago will once again shine through.
A. If
B. if it is
C. if they are
D. when
E. when it is
The answer is E
We need a subject for the sentence to make sense .
Here C is the correct choice
A we need verb
B it can not refer to researchers as they are humans
C correct
D when is wrong as it is used to show time
E same as D and it is
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