[ 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:
Grammar › ViewChocolate _____ harmful for your teeth, but strawberries _____ useful for your health.
A. is / is
B. are / is
C. are / are
D. is / are
Vocabulary › View
Which of the following best defines the term “advantage”?
A. A situation in which someone is likely to succeed
B. A situation in which someone is likely to fail
C. A situation in which someone is neutral
D. A situation in which someone is confused
Homophones › ViewCan I go with you ______?
A. To
B. Too
C. Two
Grammar › View
There _________ to be a delay .
A. seem
B. seems
