[ Past Tenses ]
They __________ (debug) for two hours before they found the error.
A. debugged
B. had debugged
C. were debugging
D. had been debugging

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Verbs & Verb Tenses › View. Which verb tense is used in the sentence: “The dog rested”?
A. Present tense
B. Past tense
C. Future tense
D. Present perfect tense
E. Present perfect tense
Grammar › View
The kids didn’t like the exhibition, ……………………………………. ?
A. didn’t they
B. were they
C. were the kids
D. did they
Grammar › ViewWhat is the positive degree of ( Taller ) ?
A. most tall
B. more tall
C. tallest
D. tall
Modal Verbs › View
The noise from the trains __________ me terribly last night.
A. was annoyed
B. annoyed
C. has annoyed
D. had annoyed
