[ Modal Verbs ]
“Do you know where Mary is?” “She ________ be at home. She was going either there or to Barbara’s after work.”
A. must
B. could
C. have to
D. should

Random Topics:
Zero ConditionalTenses and Passive VoiceMixed ConditionalsAdjectives with PrepositionPresent Perfect and Simple Past TenseHelping and Linking VerbsPunctuating ClausesGrammar - NounsSentence LabelingComparison and ModalsOther quiz:
Quantifiers › View. There are _______ carrots in the fridge. We can make a healthy snack.
A. a little
B. a few
C. much
D. many
Present Simple Tense › View
Ben and Tom …….. their bikes to school.
A. ride
B. rides
C. ridees
Vocabulary › ViewChoose the best synonym for the underlined word:
in a distant dungeon
A. castle
B. jungle
C. cell
D. captial
Grammar › View
My teacher _________ English at the moment.
A. is speaking
B. speaks
C. is speak
D. speaking
