Answer:
18 : fan
19 : ark?
20 : awl
21 : bot
22 : air
Step-by-step explanation:
18 : A baby is an in(fan)t.
19 : A baby goes out in a p(ark).
19 has too many options, but park seems like a safe bet.
20 : A baby c(raw)ls floor.
21 : A baby plays with a (bot)tle.
22 : A baby sits in a highch(air).