What does “must have” imply about a past situation?
A. It suggests a possibility that is likely.
B. It expresses a strong assumption or conclusion.
C. It indicates a potential future action.
D. It reflects an obligation that was not fulfilled.

Random Topics:
Have toTenses & PassiveAdjective ClausesPast Perfect Simple & Past Perfect ContinuousNoun Phrases and Verb PhrasesGerund vs InfinitiveRegular and Irregular VerbsModal VerbRelative Clauses & Real ConditionalsComperative and SuperlativeOther quiz:
Grammar › ViewChoose the correct preposition to complete the sentence.
We are very excited __________________ our trip to Spain next week.
A. at
B. with
C. about
D. over
Present Perfect Tense › View
Thousand of whales … (migrate) to give births.
A. migrated
B. are migrated
C. have migrated
D. has migrated
Vocabulary and Grammar › ViewThese bluefin tuna __________ very fast if they __________ in danger.
A. will swim | are
B. are going to swim | won’t be
C. swim | are going to be
D. won’t swim | will not be
Tag Questions › View
Choose the correct tag question for each sentence:
*I am singing a song, ________ ?
A. aren’t I?
B. do I?
C. amn’t I?
