[ Present Perfect Continuous ]
They___________ been _____________ very hard. They have lost weight.
A. has… exercising
B. have…exercising
C. had…exercising
D. having…exercising

Random Topics:
Verbs - third personAdverbial Clauses of Manner and ResultPresent Simple and Continuous TenseNouns, Articles, DeterminersAdverb of TimeTypes of Sentence StructuresModal Verbs & Perfect InfinitiveFuture Tense (will/be going to/p.continuous)Vocabulary, Adjective & PrepositionPast simple - Irregular VerbsOther quiz:
Conjunctions › ViewFill in the blank with the correct conjunction for addition: “She likes both coffee ___ tea.”
A. or
B. and
C. so
Vocabulary › View
The ______ young woman used her invention to create her own company.
A. despicable
B. enterprising
C. chronic
D. circumspect
Some vs. Any › ViewThe glass is empty. …………………………………. drank my orange juice.
Somewhere
Nobody
Somebody
Anybody
Grammar › View
Which of the following two is a fragment?
A. It is easy to find a parking space in downtown Meriden on most weekends.
B. Driving in Meriden on Interstate 691 during rush hour.