[ Must and Might Modals ]
What does “must have” mean in the sentence: “They must have forgotten the appointment”?
A. It is certain they forgot.
B. It is possible they forgot.
C. They were told to forget.
D. They never forget.

Random Topics:
Identifying Sentence TypesSimple Tenses in EnglishModals of Obligation and NecessityPresent Simple & Present ContinuousPast simple - Irregular VerbsPreposition & GerundCorrelative Conjunction & Complex SentencesSentence Structure and Pronoun AntecedentFuture Perfect vs Future ContinuousConditional Sentence Type 1Other quiz:
Grammar › ViewThe magician stopped ______ tricks when he realized his audience had disappeared.
A. performing
B. perform
C. to performing
D. to perform
Modal Verbs › View
– Why isn’t John at work yet?
– I don’t know, he _____________ the train.
A. must have missed
B. might have missed
C. should have missed
D. might not have missed
Adverb of Frequency and Tenses › ViewWhich one is “Countable noun”?
A. bananas
B. water
C. butter
D. cheese
Vocabulary › View
Match the correct suffix to the correct definition.
Suffix -ly
A. in this way
B. made up of; characterized by
C. not
D. again
