[ Grammar ]
How long ___ waiting for me?
a. have you been
b. you have been
c. have you

Random Topics:
Pronouns and AntecedentsSimple and Past TensesState Verbs and Action VerbsComparative Adjectives and AdverbsGerund or InfinitivesModal Verbs & Reflexive PronounsModals: Possibility, Necessity, ExpectationTOEICAsking and Giving OpinionPhrasal VerbsOther quiz:
Tenses › ViewMany tourists enjoy ___ Cambodian street food.
A. eat
B. eating
C. to eat
D. eaten
Grammar › View
You need to wear a ____ when riding a bike.
A. seatbelt
B. life jacket
C. helmet
D. safety bag