[ Grammar ]
I ………….my paper for the conference since two days ago.
A. am not submitting
B. haven’t submitted
C. didn’t submit
D. don’t submit

Random Topics:
Conditional SentencesActive and PassivePrepositions and ConjunctionsPossessive Nouns with Apostrophes and PronounsConjunctions and Verb TensesContrastive ConjunctionsVerb Tense, Pronouns and AntecedentsTenses UsageComplex SentencesFormal & Informal WordsOther quiz:
Grammar › ViewIf you want to practice your phrasal verbs in a relaxed way, you should try ________________________ English television programs such as Friends.
A. Watching
B. To watch
C. Out watching
Grammar › View
How long for the taxi?
A. are you waiting
B. have you been waiting
C. have you waited
D. do you wait
Grammar › ViewIf you __________ your vegetables, you will lead a healthier life.
A. ate
B. had eaten
C. eat
D. don’t eat
Conjunction › View
I’m going to America ___ April.
a. at
b. on
c. in
