The zoo keeper is worried because the number of visitors ______ smaller and smaller .

What a hot day! Have you had a drink?—Not yet. But I’d like to have after work.

______ lunchtime, I often chat _______ my classmates on the playground. [ ]

You are relaxing yourself here? —Yes.It feels________to walk slowly along the river.

Sanya is in the south of the island and it’s famous_____ Tianyahaijiao. [ ]