Which of the following sentences is CORRECT?
A. Marcia must have been very busy last weekend.
B. Marcia must had been very busy last weekend.
C. Marcia must has been very busy last weekend.
D. Marcia must be very busy last week.

Random Topics:
Grammar - FragmentsPresent Simple and Present Continuous-ed or -ingUse of Prepositions or ConjunctionsSentence and FragmentWish / If only ( Present)Mixed GrammarPast Perfect SimpleOffer and SuggestionModals of ObligationOther quiz:
Grammar › ViewWhich sentence suggests that Joanna rode her bike to school?
A. Joannaʼs hair was a little messy when she got to school.
B. Joanna crossed three streets on her way to school.
C. Joanna went four blocks on her way to school.
D. Joanna had to put her helmet inside the classroom closet.
Progessive Tenses › View
The doctor is examining the patient.
A. past progressive
B. present progressive
C. future progressive
Grammar › View______ you having a party?
A. Where
B. We’re
C. Were
D. Wear
Grammar › View
That’s Peter, the boy ____________ has just arrived at the airport.
A. who
B. which
C. whose
