John and Mary / not / skate
A. John and Mary isn’t skating.
B. John and Mary aren’t skating.
C. John and Mary aren’t skateing.

Random Topics:
Adjectives, Adverbs, and PrepositionsPreference & Future TensePRESENT SIMPLE vs PRESENT CONTINUOUS + QUANTComparative - SuperlativeInfinitivePresent/Future/Past Simple/Present PerfectVerbs: Action, Linking, and HelpingTypes of Sentence StructuresPresent Simple x Present ContinuousThe Structural Types of SentencesOther quiz:
Mixed Tenses › ViewWe _______________ for going home when it began to rain.
A. have prepared
B. are preparing
C. were preparing
D. will be preparing
Grammar › View
The kids went to the park …..
A. to play football
B. to buy sugar
C. to make coffee
D. to swim
Choose the correct sentence.
A. Top Gear has three presenters Jeremy Clarkson, James May and Richard Hammond.
B. Top Gear has three presenters: Jeremy Clarkson, James May and Richard Hammond.
C. Top Gear has three presenters, Jeremy Clarkson, James May and Richard Hammond.
D. Top Gear has three presenters; Jeremy Clarkson, James May and Richard Hammond.
IELTS Vocabulary › View
to produce something in such a way that it makes profit
A. produce profitably
B. advance payment
C. calculate
D. destruction
