[ Tenses ]
By the time the plane takes off, they (arrive) at the airport.
A. had arrived
B. will arrive
C. will have arrived
D. will be arriving

Random Topics:
Have vs. HasTOEIC Tenses, VerbsGrammar - Present Perfect TenseConditional Sentence Type 3Gerund, Infinitive & ModalsComparatives ( adj/ adv)Auxiliary Verbs (be, do, have)Modals Deduction: cant /mustPast Simple, Past Continuous, Past PerfectPresent Simple: affirmative, negative, interrogativeOther quiz:
Grammar › ViewIdentify the noun:
For six weeks, he drove an ambulance and worked at a canteen.
___
A. six
B. he
C. worked
D. canteen
Conjunctions › View
_____________ you clean your room _____________ you will stay home this weekend.
A. Either . . . or
B. Neither . . . nor