[ Grammar ]
The astronaut who first walked on the Moon was Neil Armstrong.
A. essential
B. nonessential

Random Topics:
Ordering AdjectivesGrammar (was, were, could, could not)Tenses and Passive VoiceLinking Verbs & Helping VerbsVerb Tenses and ModalsVerb to havePresent PerfectFirst Conditional & Future TensesConditionals III - Mixed 1st, 2nd & 3rd ConditionalsPassive Modals, Impersonal PassiveOther quiz:
Present Perfect Tense › View……. you written a letter?
A. has
B. have
C. do
Grammar › View
Tom fell __________ with his friend over a small issue, but they soon reconciled.
A. in
B. out
C. apart
D. through