[ Tenses ]
They … for an hour before the doctor came.
- had been waiting
- waited

Random Topics:
Grammar, adverbs of frequency placementAdjective SuffixesVerb ConjugationGerund or InfinitiveGrammar MistakesPersonal Pronouns and VerbPresent Continous TenseModals and InversionPassive and Active VoiceGender and GrammarOther quiz:
Tenses › ViewAre we ____ a deal by the end of today?
A. making
B. make
C. made
D. are make
Phrasal Verb › View
The thief ran ______ with the woman’s purse.
A. for
B. into
C. off
D. on
Homophones › ViewCan I go with you ______?
A. To
B. Too
C. Two
Grammar › View
There _________ to be a delay .
A. seem
B. seems
