My mother ______ the window already, so the room looks much brighter.

It was at four o’clock in the afternoon ____ he and his grandpa reached the museum in Guanghan

We’re having a meeting in half an hour. The decision ________ at the meeting will influence the futureof our company.[ ]

Many people do not realize the importance of health __________ they have fallen ill.

Thanks to the success of the bussiness, we can _____a flat this year.[ ]