[ Perfect Progressive Tenses ]
They ______ (not/sleep) when the alarm went off.
A. were not sleeping
B. have not been sleeping
C. had not been sleeping

Random Topics:
Present TenseConstrative ConjunctionParticiple - ing/ edRelative Pronouns with PrepositionsNounSubject/Verb Agreement with Collective NounsComparison Degree & GerundsVerb Present Simple TensePast Tense & Present Perfect TenseQuestion TagsOther quiz:
Tenses of Verbs - Usage › ViewChoose the correct Structure of the Present Perfect Continuous tense
A. has/have + PII
B. will be + V-ing
C. has/have been + V-ing
D. is/are + V-ing
Grammar › View
Harry’s ______ broken his new computer.
A. Still
B. Yet
C. Just
D. Already
Vocabulary › ViewWhat does ‘Elusive’ mean?
A. Difficult to find, catch, or achieve.
B. To firmly establish (an attitude, habit, or belief) so that change is difficult or unlikely.
C. To remove the inner organs of a body; metaphorically, to deprive of essential content.
D. The quality of being full of energy, excitement, and cheerfulness.
Subjunctive › View
I wish I ____ at home.
A. Was
B. Were
C. Either could be used here.
