Although we are young, ______ we can still do something to help them.
We should keep ______ in the reading –room.
— Mary, can you take good care of ________ while I’m not at home?— Of course, I can.
The girl ________ black hair is my sister.
Finally, save your document before you ________ your computer.
— ________ do I write the name?— Write it in the box. OK, then click “save” again.