[ Past Perfect and Past Perfect Continuous Tense ]
The doctor asked me how long _______ (have) the symptoms before I came to check it.
A. had having
B. had been had
C. had been have
D. had been having

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Simple Present and Present ContinuousPresent Perfect vs Past Simple TenseFuture TensesVerb to beComparatives and ConjunctionsNouns & PronounsConditional Sentences Type 0, 1 and 2Noun, Pronoun, Adjective, VerbVerbs and Subject Verb AgreementGrammar - direct/indirect objectsOther quiz:
Tenses › ViewShe … the dog at the moment.
A. feed
B. feeds
C. fed
D. is feeding
Conditional Sentences › View
It rains so we can’t go to school.
A. If it rains, we could go to school
B. If didn’t rain, we could go to school
C. If it not rain, we could go to school
D. If it rains, we can go to school