[ Present Perfect Continuous Tense ]
He … since 7 o’clock.
A. Has been studying
B. Is been studying
C. Studying

Random Topics:
Modals in the Past - Speculation and DeductionVerb to beNarrative Tenses & ConditionalsRegular and Irregular VerbsIndefinite ArticleModal Verbs and Gender NounsGerund NounSo - Too - Either - NeitherComparatives and SuperlativesCOUNT - NONCOUNT NOUNSOther quiz:
Grammar › ViewWe quit ………………………… our yard during the summer.
A. watering
B. to water
C. to watering
D. water
Homonyms › View
An unmoving object is said to be ___.
a. stationary
b. stationery
she’s amazing, she ….. speak five languages, including Russian
A. couldn’t
B. have
C. can
D. can’t
Wh- Questions Present Simple Tense › View
When is your birthday?
A. Smartphone
B. June 17.
C. Peter
D. Fashion Island