I________ buy that book because I didn't bring any money ...

★ Comparison and Modals

I________ buy that book because I didn’t bring any money with me.

A. can’t

B. couldn’t

C. may not

D. might not

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The black dress is more expensive than the white one.

A. The black dress is cheaper than the white one.

B. The white dress is as cheap as the black one.

C. The white dress isn’t as expensive as the black one.

D. The white dress is more expensive than the black one.