--Have you ever heard of an American president called Chester A.Arthur?
--No, and he is not mentioned in my history book at all. He seems ______________.
A. to have been completely forgotten B. having completely forgotten
C. to have completely forgotten D. completely forgetting
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 |
Medicine shouldn’t be kept _______ it is accessible to children.
| A．even if | B．which | C．where | D．so that |