[ Present Tenses ]
Jane isn’t here yet. I (wait) _________________ since noon but there is no sign of her.
A. have waited
B. have been waiting
C. will have been waiting
D. had been waiting

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Modals Deduction: cant /mustIrregular verbsIndefinite PronounsComparison & Modal Verbs in Passive VoiceIndependent ClausesVerb Tense, Pronouns and AntecedentsToeic VerbSimple Present and Present ContinuousPronounVerb to haveOther quiz:
Tenses › ViewLook! That man ………………….. (take) photos of our car!
A. are taking
B. is taking
C. takes
Type of Sentences › View
The author who is touring several cities to promote his book will be in Chicago at the end of October.
A. Simple sentence
B. Compound sentence
C. Complex sentence
D. Compound-complex sentence
I ___ go to the dentist; I have a terrible toothache.
A. Can
B. May
C. Must
D. Should
Grammar › View
We … breakfast when someone … on the door.
A. was having, knocked
B. were having, knocked
C. had, knock
D. are having, knock