[ Grammar ]
Choose the correct answer for the gap:
How long ___________ your colleagues or classmates?
A. have you known
B. have you been knowing
Select your answer:

Random Topics:
Gerund vs InfinitiveConditional and SubjunctiveTypes of Simple SentencesProgessive TensesModals for DeductionHow many / How much - Is there / Are thereVerbs with Prepositions and ConjunctionsPresent Perfect Tense or Present Perfect Continuous TenseIndefinite and Reflexive PronounsPast Narrative TensesOther quiz:
Conditional Sentences › ViewIf she …………………….. the lottery last year, She……………………..rich now.
A. Have won/would be
B. had won/would be
C. won/would be
D. wins/will be
Grammar › View
You ________ take along some cash. The restaurant may not accept credit cards.
A. had better
B. could
C. can
D. has to
