My sister ______ go to bed _______ my mother came back last night.

is the price of an iphone 5s — It will be more than 5000 yuan. Good things always ________ much.

Hiking by oneself can be fun and good forhealth .It may also be good for _______building .

He has been working since 7:30 this morning ______ he is so tired out

We all breathed a sigh of relief when the news came _________ no one was injured in the accident.