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16. Ben has got …apple.
A) an B) any
17. I usually get up …seven o’clock.
A) in B) at
18. A chimpanzee is …than a dog.
A) more intelligent C) the most intelligent
19. My sister Mary is tall, but I’m taller than…
A) her C) us
20. Paul …to do his homework tonight.
A) must B) can