[ Modal Verbs ]
They ___ be lost. They’ve been driving around for hours.
A. can
B. must
C. may
D. might

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Will & Be going toIf Conditional Zero and OneIf/Unless - Conditional type 1Present ContinousSubject/Verb Agreement with Collective NounsPronouns ( Interrogative )Past Tense vs Present Perfect TenseComparatives or SuperlativesHow much or How many?Passive Modals in Different TensesOther quiz:
Grammar › ViewI __________ (not see) my grandparents since last summer.
A. did not
B. hadn’t seen
C. haven’t seen
D. am not seeing
Subject Verb Agreement › View
Many companies ______ criticized the government’s bill.
A. have
B. has
C. having
D. to have
Vocabulary › Viewthe ability to be maintained at a certain rate or level
A. energy conservation
B. human impact
C. renewable resources
D. sustainability
E. availability
Modal Verbs › View
Perhaps the teacher is in the staff room. The teacher __________________ be in the staff room.
A. Must
B. Might
C. Can’t
D. Has to
