[ Tenses ]
They ____ here for three hours by the time it starts.
A. will have waited
B. will wait
C. have waited
D. will be waiting

Random Topics:
Countable & Noncountable NounsParticiple AdjectivesUsed to & would & Past SimplePresent, Past and Future TenseAdverbs of Time and PlaceArticleConditional Sentence Type 0-3Modals and PrepositionCompliment, Congratulation, and HopePhrasal Verb & Prepositional PhraseOther quiz:
Adverb Clauses › ViewHe got up at the crack of dawn __________ catch the plane.
A. for
B. so that
C. in order to
D. because
Simple Tenses › View
We … take taxi to the station
A. will
B. going to
C. will be
D. is going to
Grammar › ViewThe company’s ____ use of materials has saved a great deal of money and has been a model for many other businesses.
A. economize
B. economy
C. economical
D. economist
Vocabulary › View
I tore my coat on the ______surface of the rock.
A. jagged
B. gradual
C. treaty
D. uneasy
