She usually keeps her valuables, such as jewels and money, ________ she believes secure.
| A．even if | B．in case |
| C．where | D．that |
The problem is _____ we can master modern science and technology in a short time.
| A．if | B．that | C．what | D．how |
Give it to _____ you think can do the work well.
| A．who | B．whoever | C．whom | D．someone |
Included _____.
| A．all kinds of books | B．was all kinds of books |
| C．were all kinds of books | D．all kinds of books are |
Here _____. This is our classroom.
| A．are we | B．we are | C．you are | D．are you |
Only in the library _____ the book.
| A．we can get | B．can we get | C．can get we | D．we get |