I’d like the colour, but I’m afraid it’s ___expensive

My mother told the visitors _______ walk quietly and _______ wake the baby up.

You must go to _______ the doctor if you don’t feel _______ now.

How are you going to spend this weekend — the weather is fine, we’ll climb Mount Tai.

I insisted _____ to see a doctor, but heinsisted nothing ____ wrong with him.