[ Modal Verbs ]
Look at all the tools on the floor. He ______ somewhere around here. Let’s find him.
A. couldn’t be working
B. can’t be working
C. couldn’t be working
D. must be working

Random Topics:
Past and Future TensesPassive Modals, Impersonal PassiveVerbals and GerundsSimple Past/Past ProgressiveDeterminersHave as verb and auxiliaryConditionalsAdverbs of frequencyFuture Time and TensesSubject Verb Agreement and Coordinating ConjunctionsOther quiz:
Modal Verbs › ViewThis bag looks expensive. It ___ belong to someone rich.
A. must
B. might
C. can’t
Grammar › View
Q: ________is the hottest continent on Earth?
Ans: Africa.
A. When
B. Who
C. What
D. Why
Grammar › ViewYou haven’t eaten all day
You____be starving
A. can’t
B. must
C. might
Vocabulary › View
Which is spelled correctly?
A. stumickacke
B. stumicach
C. stomachache
D. stomiake
