I’m very glad I have my own room in myhouse. I ______ do what I want in it.

________, it is important for him ________ the meeting.

We often take part in after class activities（活动）. I like to play ____ basketball , but my brother likes to play ____ guitar .

_____ there are living creatures in the outer space as those on Earth hasn’t been proved until now. [ ]

The machine is of good quality. If it __________ break down within the first year, we would repair it at our expense.