Change the sentence to passive voice in past perfect continuous tense: They had been waiting for a long time.
A. They had been waiting for a long time.
B. They had been being waited for a long time.
C. A long time had been being waited by them.
D. A long time had been waited by them.

Random Topics:
Verb Present Simple TenseArticles and DeterminersSimple Future - WillThe Future Simple TenseRelative Clauses with who and whichGrammar speak,talk,say,tellHomophonesTypes of PhrasesPresent ContinousDefinite pronouns (Subject, Object, Reflexive)Other quiz:
Modals for Obligation › ViewDid you _____ extend your visa so that you could stay for longer?
A. must
B. ought to
C. have to
D. should
Vocabulary › View
ABRUPT
A. TO DRAW TOGETHER OR BECOME SMALLER
B. SUDDEN
C. BRIEF TO THE POINT
I remembered the answer after I _____ the test.
A. finish
B. finishes
C. finished
D. finishing
Grammar › View
Select the complete sentence.
A. The balloon floated up.
B. Although I have six dollars.
C. Running up the street as fast as I could.
D. On the top shelf in the back of the closet.
