I’m tired. I _____ the house since 9 this morning.
A. am cleaning
B. was cleaning
C. had been cleaning
D. have been cleaning

Random Topics:
Present/Past/Past ParticplePresent/Future/Past Simple/Present PerfectVerb Tense, Pronouns and AntecedentsArticle & PrepositionComparative AdverbsTo infinitive - GerundVerbs and AdverbsMaritime Vocabulary and GrammarQuantifiers & Modals of ObligationPast Tense and Perfect TenseOther quiz:
Conjunctions › View_____________ the neighbour’s cat saw me, it ran away. (a)
A. When
B. Where
C. Who
D. Why
Vocabulary › View
I live in a/an ____ with my parents and my elder sister in the coastal area.
A. extended family
B. nuclear family
C. extended house
D. nuclear house
Grammar › ViewMy brother is clever ……. tall.
A. and
B. or
C. but
Comma › View
Which sentence is written correctly?
A. The busy servers took orders and delivered meals to hungry customers.
B. The busy servers took orders, and delivered meals to hungry customers.
C. The busy servers, took orders and delivered meals to hungry customers.
D. The busy servers, took orders and delivered meals, to hungry customers.
