______can I keep the book —For a week.

I visited the Purple Mountain Observatory last Sunday.— Why didn’t you tell me earlier

_______ is necessary for you to lock thecar when you don’t use it.

The novel was so interesting that he read it _____ in a single day.

sigh over the small achievement_____ , and I’m sure if you keep at it, you’ll see the light at the end of thetunnel!