They (walk) for four hours, so they are tired.
A. had been walking
B. were walking
C. have been walking
D. will have walk

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Identifying TensesGrammar and EssayConditional and SubjunctiveNouns and QuantifiersAdverbial ClausesPresent Perfect vs Past Simple TensePast ParticiplePast Tense & Past Continuous TensePresent and Past Simple TenseAdjectives and DegreesOther quiz:
Figurative Language › ViewWhat is a metaphor?
A. Comparing two things by using one kind of object or using in place of another to suggest the likeness between them
B. A figure of speech comparing two unlike things that is often introduced by like or as
C. Naming a thing or an action by imitating the sound associated with it
D. Big exaggeration, usually with humor
Linking Verb › View
Please choose the correct linking verb in the sentence.
Mrs. Myers and Mr. Myers were glad.
A. And
B. Were
C. Glad
D. No linking verb
Alice’s parents _______________ in Singapore.
A. grew up
B. grown up
C. grow up
D. grows up
Adjective or Adverb › View
Patrick thinks that chocolate cake is … than banana cake.
A. delicious
B. more delicious
C. a more delicious
D. most delicious
E. a delicious
