[ Grammar ]
No one knows ___ the singer will show up at the airport. All her fans are waiting for her.
A. what
B. who
C. when
D. what

Random Topics:
Future Perfect ContinuousPreposition of TimeDemonstrative PronounsPossessive Adjective and PronounPreposition after some VerbsDirect and Indirect QuestionTemporal Conjunctions and ConnectivesCOUNT - NONCOUNT NOUNSCountable Vs Uncountable NounsAdjectives-Comparison, SuperlativeOther quiz:
Tenses › View. They have been studying for three hours.
A. Present Perfect Tense
B. Present Perfect Continuous Tense
C. Past Continuous Tense
D. Future Perfect Tense
Adjective & Adverbs › View
A new study show that brain circuitry makes some people ——– susceptible to becoming addicts when compared with others.
A. as
B. more
C. the most
D. such
E. enough
Grammar › ViewWhen you’re driving, you _____ stop if someone steps onto the pedestrian crossing.
A. must
B. mustn’t
C. needn’t
Verb To Be › View
We_____ living in USA.
A. are
B. is
C. am
D. ´m