I’m sure that they had practiced hard for the games as they won a lot of medals.
A. They couldn’t have practiced hard for the games as they won a lot of medals
B. They must have practiced hard for the games as they won a lot of medals
C. They shouldn’t have practiced hard for the games as they won a lot of medals
D. They might have practiced hard for the games as they won a lot of medals.

Random Topics:
Gerunds, Infinitives and Modals of PossibilitySecond and Third ConditionalConjunctive Adverbs and PunctuationPaired ConjunctionPassive Modals, Impersonal PassivePresent Tense vs Present Continuous-Ing and Infinitive Verb PatternsSimple, Compound, Complex SentencesPast Simple and ContinuousConjunctions in Complex SentencesOther quiz:
Daily Routines & Tenses › ViewListen! My brother ______ piano in his room.
A. plays
B. is playing
C. is playing
D. plays
Tenses › View
At 10 o’clock he _________(compose) in his music room.
A. composed
B. was composing
C. compose
D. were composing
Comparative Adjective › ViewThe durian is ___________ the rambutan.
A. the most expensive
B. expensiver than
C. more expensive than
Homophones › View
The words “mince” and “mints” are homophones.
A. True
B. False
