[ during, for, while ]
She has been sleeping ___ ten hours.
A. during
B. for
C. while

Random Topics:
Simple Present Negative and QuestionSimple Past ContinuosHas and HaveModal RequestsFuture FormsFuture Perfect vs Future ContinuousAdverbs or AdjectivesModals in the PastModal Verb, Passive VoicePast Perfect Tense and Past TenseOther quiz:
Grammar › ViewChoose the correct form of the verb: “Everyone ____ happy today.”
A. are
B. is
C. be
D. were
Future Forms › View
I _____________________ my sister in April.
A. am going to see
B. will see
C. have seen
D. see
Grammar › ViewDo you mind closing the window?
A. Will
B. Could
C. Would
Grammar › View
We decided…….our holiday on a Spanish beach.
A. have spent
B. spend
C. to spend
D. spending
