[ Present Perfect Continuous ]
The machines _____ working today.
A. don’t
B. aren’t
C. isn’t
D. not

Random Topics:
Too or EnoughPresent or Past TensesAdverbs of TimePhrases & ClausesSuffixes and TensesComparativeFOR & SINCESingular and Plural NounsGrammar - Present Perfect TensePast and Perfect TensesOther quiz:
Grammar › ViewWhen Paul ___ his gym clothes to the laundry, ___ ___ be a yucky ___ in the place.
A. scent, their, most, sent
B. sent, there, most, scent
C. sent, there, must, scent
D. sent, they’re, must, scent
Possessive Adjective › View
Which sentence is correct?
A. Our teacher is very strict.
B. We teacher is very strict.
That situation is really strange, but it does not _______ me.
A. astonish
B. astonished
C. astonishing
D. astonishment
Adverb Clause › View
__________ the data is accurate, our conclusions should be reliable.
A. After
B. Until
C. Although
D. Because
