[ Tenses ]
When we saw the crime, we _____ the police.
A. called
B. were calling

Random Topics:
Comparatives - SuperlativesJobsHave to / Do not have toPast Simple Negative & QuestionsPassive VoiceTake or PutAbilityGrammar Pronoun and Singular Plural NounGrammar - may & mightComparative - SuperlativeOther quiz:
Grammar › ViewI ___________ come to the party yesterday.
A. must
B. may
C. couldn’t
D. will
Subject and Verbs Agreement › View
The old ____ help.
A. needs
B. need
C. needing
D. all are correct