[ 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:
Toeic Verb › ViewFollowing safety precautions ______ workers avoid any injury in the workplace
A. helping
B. helps
C. to help
D. help
Prepositions › View
The boy runs _____ the road to meet his friends on the other side.
A. upon
B. across
C. opposite
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
