Topics: Adverb and Noun Clauses
When ………………. is not known.
A. was the wheel invented
B. the invention of the wheel
C. inventing the wheel
D. the wheel was invented
Select your answer:

Random Topics:
Reported Speech and SubjunctiveSimple Present and Present ContinuousCommon & Proper NounsTransition WordsPhrasal Verb With TakeRelative PronounsWish + Verb 2Grammar (Possessive Pronouns)InfinitivesAdverb PhrasesOther quiz:
Verb Tenses › ViewThe advertisement says planes __________ for Chicago each hour.
A. Depart
B. Departs
C. Departed
Tenses and Comparisons › View
Hey there, Siti! Can you help Joko figure out the comparative form of the adjective ‘strong’? Let’s see if you can lift the right answer!
A. stronger
B. strongest
C. strongly
D. strongerest
