[ Grammar ]
They had been walking _____ 2 hours when it started to rain.
A. since
B. for
C. in

Random Topics:
Past Simple VerbsSuperlative AdjectivesConditional SentencesVocabulary Spelling GrammarAdjective ending with ED & INGAdverbial Clause of Cause and EffectPassive Modals, Impersonal PassiveSpeech Tensesanother/the others/each other/one anotherConnectivesOther quiz:
Past Tense › ViewWhere ___________ you an hour ago?
A. is
B. are
C. was
D. were
Future Tenses › View
Recognize the future perfect tense in the sentence: ‘By the time you arrive, I will have finished cooking.’
A. will have finished
B. finishing
C. finished
D. will finish
Prepositions › ViewShe smiled________hom happy.
A. at
B. with
C. to
D. about
Conjunction › View
Identify the conjunction in the sentence: I like to read books and watch movies.
A. but
B. or
C. so
D. and