Topics: Grammar and Vocabulary
The __________ of outer space is a very expensive activity.
A. weightlessness
B. colony
C. exploration
Select your answer:

Random Topics:
Adjectives with -ED and -INGwould should couldGrammar - direct/indirect objectsOffer and SuggestionWho or WhomPronouns/ Present TensePast Perfect and Past Perfect ContinuousConjunctions and TransitionsPossessive AdjectivesIF CLAUSEOther quiz:
Grammar › ViewI enjoy ———- in the garden.
A. to work
B. having work
C. working
D. being worked
Grammar › View
The house was dirty. They ………. it for weeks.
A. didn’t clean
B. hadn’t cleaned
C. cleaned
D. don’t clean
