Grammar Quiz
[ Idioms ]

Scientists will break ___ in their search for new sources of energy.
a. up
b. through
c. out

Select your answer:
A  B  C  D  E 

Random Topics:
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Other quiz: Grammar

My dog usually _______________ when he sees a cat.

A. bark

B. barks

C. is barking

D. are barking

How to use : Read the question carefully, then select one of the answers button.