.— It’s a key.

Emergency line operators must always ________ calm and make sure they get all the information they need to send help.

The city,________ by mountains and lakes,is so beautiful that they have decided to stay there for another two days. [ ]

When__________ and visit our exhibition next month?— When_______, I will let you know

Knowing what colors look good _______ your skin is of great importance when you buy clothes.