I think at the beginning of each book a __________ introduction to it is necessary.
| A．wild | B．secure | C．swift | D．brief |
____ to reach the headmaster on the phone, the student sent an email instead.
| A．being failed | B．Having failed | C．Failed | D．To fail |
The lawyer required the ____ of evidence so that he could defend the accused.
| A．judgment | B．contribution | C．subscription | D．presentation |
Sorry, Dad, I forgot to water the flowers.
--____. You can do it after lunch if you like.
| A．Me, too | B．That’s right | C．Don’t mention it | D．Never mind |
If you ____ the chat room ten minutes ago, you ____ what we were talking about.
| A．have joined; will know | B．would join; have known |
| C．should join; would know | D．had joined; would have known |
The rooms need ____. Our guests are coming tomorrow.
| A．to clean | B．cleaning | C．cleaned | D．being cleaned |