[ Present Perfect Tense ]
He started to work in the office at 8 o’clock. It’s now 12 o’clock and he just stopped it. It means that he …. for four hours.
A. has worked
B. worked
C. has been working
D. is working

Random Topics:
Present and Past TensesModals, Infinitives and GerundsAdverb PhrasesConditional Sentence Type 3Countable & Noncountable NounsFuture TenseGerunds and InfinitivesSo / Neither / Either / TooContractions and ConjunctionsWish SentencesOther quiz:
How often - long - much - many › View_______ have you been single?
A: All my life
A. how long
B. how often
C. how much
D. how many
Must or Mus not › View
We ______ raise our hand to speak.
A. must
B. mustn’t
Vocabulary › ViewWhen studying for the vocab midterm, you’ll need to ___ all the words into one list.
A. Aggregate
B. Affable
C. Articulate
D. Bizarre
Grammar › View
Some models hardly go out and they avoid _________ to clubs and restaurants. (go)
A. go
B. going
C. to go
D. to going
