[ Modal Verbs ]
Don’t leave your window open at night. Someone ________ climb in.
A. might
B. can’t
C. couldn’t

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Grammar › ViewMy cat Bart is ………………. my cat Lisa.
A. bigger
B. biger than
C. bigger than
D. more big
Modal Verbs › View
You ……… spend too much time playing computer games. It’s bad for your eyes.
A. should
B. must
C. shouldn’t
D. can