[ Tenses ]
Present Perfect Continuous: They ________ for two hours without a break.
A. will be swimming
B. have been swimming
C. had been swimming
D. will have been swimming

Random Topics:
ConjunctivesHow much and how manyGrammar: so and suchAuxiliary WordsSentence Types and ConjunctionsComperative and SuperlativeGrammar - NounsPassive Voice, Question Tag, PrepositionsMixed TensesSpeech TensesOther quiz:
Prepositions › View
Where are the pencils?
A. The pencils is on the cup.
B. The pencils are under the desk.
C. The pencils is in the cup.
D. The pencils are on the desk.
E. The pencils are in the cup.
Grammar › View
When we add (ing) in the word play, it will be…………….
A. playying
B. playing
C. plaing
Grammar › ViewWhen we got to the party, everyone………..
A. danced
B. was dancing
C. dance
D. is dancing
Grammar - may/might/could › View
Those jeans don’t fit her anymore. She _____ lose some weight.
A. needs to
B. need
C. have to
D. has
