[ Adverb Clauses ]
They make telescopes________________ they can see the galaxies well.
A. so that
B. since
C. whenever
D. because

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General Knowledge › ViewInside an aeroplane, flying at a high altitude…
A. The pressure is the same as it is outside
B. Normal atmospheric pressure is maintained by the use of air pumps
C. The pressure inside is less than the pressure outside
D. Normal humidity and partial vacuum are maintained
Grammar › View
___ hour
A. a
B. an
C. the
D. – (nothing)
A parrot is ……… than a pigeon.
A. colourful
B. most colourful
C. as colourful
D. more colourful
Grammar › View
PLURALS: 1 man, 2 ____
A. man
B. mans
C. men
D. manned