[ Grammar ]
Scientists __________ a cure for that disease yet, but they are working hard.
A. don’t find
B. didn’t find
C. haven’t found
D. aren’t finding

Random Topics:
Contrastive ConjunctionsFuture Simple TensesPast Tense and Perfect TenseDefinite and Indefinite ArticleModals Deduction: cant /mustAdjective / Noun + to InfinitiveVocabulary and Verb TensesFuture Tense (will/be going to/p.continuous)Will and Will notPrepositionOther quiz:
Grammar › ViewIn my opinion, Salalah Festival is _______ Muscat Festival.
A. better than
B. the best
C. the worst
D. gooder than
Phrasal Verb › View
Tom was slow to catch_______, but gradually he began to understand
A. in
B. on
C. away
D. out
Grammar and Vocabulary › ViewWhich of the following is a countable noun?
A. Music
B. Chair
C. Air
D. Sand
Vocabulary › View
Grammar: Present Simple
5. My mom ………….. cooking.
A. like
B. is liking
C. likes
