11．It was only after he came back___________he decided to write to Kite to find out if he was wasting his time there.
| A．that | B．how | C．and which | D．What |
---Lost and Found office. ________?
--- I wonder if you have a small black suitcase of mine.
| A．What can I do for you | B．Who’s that |
| C．What’s that | D．How do you do |
So far all cloned animals have suffered from some different serious disorders, _______ dying soon after birth.
| A．many of which | B．many of whom | C．many of them | D．many of that |
When asked to explain ________ he does to make his students so fascinated with his lessons, the teacher paused and thought deeply.
| A．what it is that | B．that what it is |
| C．what is it that | D．that what is that |
_______ to her own work, she spent little time with her children.
| A．Devoting | B．To be devoted | C．Devoted | D．Having devoted |
--- Are you happy with this laboratory?
--- Not a little. We can’t have _______.
| A．a worse one | B．a nicer one | C．so bad one | D．so nice one |