
[ Vocabulary ]
It’s very ____, saving money and energy, to build energy-efficient buildings that don’t lose heat.
A. connected
B. risky
C. cost
D. economical
Select your answer:

Random Topics:
AdverbPast ParticipleIndefinite Pronoun Modal VerbPrepotitionsPassivisationReported SpeechSimple Past Irregular & NegativeGrammar and Structure
Other quiz:
Pronoun › View_____ is a wonderful movie.
A. It
B. I
C. they
Subject - Verb Agreement › View
Most of the spectators _____ surprised by the ending of the show.
A. is
B. was
C. were
D. been
How to use : Read the question carefully, then select one of the answers button.