[ Grammar ]
How many astronauts have walked on …… moon?
A. –
B. a
C. an
D. the

Random Topics:
Grammar - Present PerfectPassive Voice - Present TensesAdverbial Clause of Cause and EffectPast Perfect and Past Perfect ContinuousPresent, Past and Future TenseNarrative Tenses & ConditionalsJobsGrammar of Conjunctions and PrepotitionsPrepositions & Prepositional PhrasesPassive Voice Present SimpleOther quiz:
Adverb Clauses of Time › ViewMy alarm clock rang. I woke up.
I woke up _____ my alarm clock rang.
A. before
B. after
C. when
D. while
E. until
Still, Yet, Already & Just › View
My kitchen smells really nice because I’ve ______ finished bakjng some cookies.
A. Already
B. Yet
C. Just
watchful; quick to notice; careful and diligent
A. primary
B. observant
Grammar › View
Do you understand? Yes, _______________
A. a few
B. a little
