Ex5: Choose the correct answers

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Ex5: Choose the correct answers (2pts).
should
may
drink
walk
"Welcome to our zoo! You can see a lot of zoo animals here. It's lots of fun to visit
our zoo. But you should remember: don't feed animals without our permission
because you (1).
be hurt by them. Don't (2)
on the grass. Don't run
and make noise in the zoo. You can (3).
water or eat ice cream at the food
stall near the lake. You (4)
keep the zoo clean and tidy. Enjoy your visit".