[ Grammar ]
They have been____ the work
A. Doing
B. Done
C. Do
D. Did

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Grammar: Defining Relative ClausesVerb TensePRESENT SIMPLE - CHILDRENTo Infinitive or GerundGrammar - First ConditionalModal Verbs of Certainty and Possibilityused to vs be used to vs get used toModal Verb, Passive VoiceEmployment VocabularyGrammar & TensesOther quiz:
Grammar › ViewThe doctor suggested that you _____ this procedure.
A. to try
B. try
C. trying
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Tenses › View
What ____ at 9 o’clock last night? I phoned you but couldn’t get through to you.
A. did you do
B. were you doing
C. would you do
D. had you done