-__________does he take a shower?
-___________six forty.
| A．What time; On | B．When; In |
| C．What time; At | D．Where; For |
Paul doesn’t know _________ about his problems.
| A．how to talk to | B．who to talk |
| C．where to talk to | D．who to talk to |
--Who _______ the Harry Potter series________ ? -- J.K.Rowling.
| A．did, be written | B．was, written |
| C．was, written by | D．did, be written by |
We know that about seventy percent _____ the earth _____ covered by water.
| A．/; is | B．of; are |
| C．of; is | D．about; are |
The question is _________ .
| A．so hard for us to understand it |
| B．too hard for us to understand it |
| C．too hard for us to understand |
| D．so hard for us to understand |
-- Must I return the book this week?
-- No, you ______. You can _____ it for 20 days.
| A．mustn’t; keep | B．don’t have to; borrow |
| C．needn’t; keep | D．mustn’t; lend |