[ Passive Voice ]
These curtains are so dirty. They must ____ .
A. be cleaned
B. clean
C. cleaned

Random Topics:
Who vs WhomPast ContinuousAuxiliary Verbs & Question TagsModals for ObligationSimple Present Continuous TenseSecond ConditionalAdjective + to + VerbPassive Modals in Different TensesModals - Conditionals - Future TensesPreposition FormOther quiz:
Grammar › ViewMarried women should be encouraged ____ a career of their preference.
A. pursued
B. pursue
C. to pursue
D. from pursuing
Past Continuous and Past Simple Tense › View
When I ………………… the cafeteria Mary ………… lunch with Peter.
A. entered / had
B. enter / have
C. entered / is having
D. entered / was having
Tenses › ViewThe service center ____ vehicles right now, during the busiest hour.
A. is repairing
B. repaired
C. repairs
D. will repair
Sentence Structure › View
Yadriel went to the beach, ___ he learned to surf.
A. or
B. and
C. but
D. for
