[ Grammar ]
Tom and Mary are still discussing the math exercise with each other because they ____ how to do it.
A. aren’t working out
B. haven’t worked out
C. haven’t been working out
D. didn’t work out
Random Topics:
Modals and TensesPresent Tense vs Past TenseRegular and Irregular AdverbPast Continuous vs Past SimpleFormal & Informal WordsAdverbs, Modals, Preposition of timeVerb + PrepositionBe used to vs used toSimple Past ContinuosVerbsOther quiz:
Grammar › ViewThe first large predators on Earth, according to some sources, was sea scorpions that grew to almost six feet in length.
A. NO CHANGE
B. were
C. is
D. has been
If Conditionals › View
You ____ junk food if you ____ get fat.
A. eat/want to
B. won’t eat/will want to
C. should eat/don’t want to
D. shouldn’t eat/don’t want to