[ Past Modals ]
That was a strange noise . It_______________ the kids next door.
A. may have been
B. might not have been

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Future Perfect ContinuousParts of Speech and Compound SentencesLinking Verbs & Helping VerbsWill, Be going to, Present ContinuousNoun and PronounEs and SPrepositionSimple Past Tense (was/were)Conditionals III - Mixed 1st, 2nd & 3rd ConditionalsGerund and InfinitivesOther quiz:
Mixed Present Tenses › ViewI___________(never/to be) to Spain.
A. was never
B. am never being
C. am never
D. have never been
Past Perfect Tense › View
We form the past perfect with had and the _____ of the main verb.
A. affirmative
B. before
C. negative
D. past participle