[ Grammar ]
. I don’t know ___ book this is.
A. who’s
B. whose
C. whoms

Random Topics:
Verb Forms and PrepositionsGrammar - Wh QuestionsWill and Going toTenses & AffixesPresent Perfect and Past TensesNoun, Adjective, and Adverb ClausesVerb-ing and Infinitive-ed or -ingComparative and Superlative AdverbsFuture - Will and Be going toOther quiz:
Vocabulary › Viewthe pull of objects toward Earth
A. force
B. motion
C. gravity
D. pull
Grammar › View
Usain Bolt is the _________ runner in the competition.
A. fast
B. fastest
I get up at… (9:45)
A. A quarter to ten
B. A quarter past ten
Simple Present Tense › View
It … most of the time.
- happen
- happens
