[ 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
Select your answer:
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Past Simple and Past ProgressiveCountable - UncountableSimple Past Irregular & NegativeModalGrammar - help/have/let/makeGrammar: SyntaxFigurative Language VocabularyCountable and UncountableGrammar and PrepositionModal Auxiliary VerbsOther quiz:
Idioms › ViewTo get an illness from someone is to ___.
a. pick it up
b. truck it in
c. take it away
Reported Speech › View
Laura said she had worked on the assignment since________
A. yesterday
B. two days ago
C. the day before
D. the next day