He could see the tall chimneys(烟囱) of the factory ______.

In our school library, there a number of books on science and the number of the books growing larger and larger.

We looked at each other ___ surprise when we heard abird singing ” Happy birthday to you” .[ ]

Dream of the Red Chamber is _____ worth _____ because we can learn a lot about the noble families in the feudal society.

I’ll see to your cat when you aren’t in ? What does the underlined phrase mean ?