[ FOR & SINCE ]
I have been waiting _______ 4 o’clock.
A. since
B. for

Random Topics:
So....that... Such.......thatImperative SentencesSimple Past Tense & Future TenseLinking Words and PhrasesConjunctive AdverbsOffering HelpRelative Clauses and UsageVerbs & Phrasal VerbsConjunctionsSimple Present Tense vs Present Continuous TenseOther quiz:
Quantifies and Modals of Deduction › ViewI have been spending a lot of money this money this month, but I still should have _____ to pay rent.
A. some
B. enough
C. none
D. too few
Tenses › View
The chief engineer ……………………………… all the workers of the plant now.
A. is instructing
B. are instructing
C. instructs
D. instruct
Present Perfect Tense › ViewHow many books has the author _______ so far? About five books.
A. write
B. written
C. writing
D. wrote
Grammar and Vocabulary › View
Sam and Kevin are running ________ the park.
A. on
B. in
C. under
