[ Present Perfect Continuous Tense ]
I’m sleepy because I … all night.
- have been staying up
- has been staying up

Random Topics:
Second ConditionalSimiles and Body IdiomsModal Verbs of PermissionIELTS VocabularyRelative PronounSimple Past TenseConjunctions and PrepositionsTenses & AffixesInfinitives or GerundsPre-intermediateOther quiz:
Grammar › View_____ a sofa
A. That is
B. Those are
Grammar › View
A: What________we_______?
B: __________go swimming
___
A. will/do/Let’s
B. shall/do/Let’s
C. shall/do/let me