What fresh air, ________?
| A．is it | B．does it | C．isn’t it | D．doesn’t it |
In the dream Peter saw himself by a fierce wolf and he woke suddenly with a start.
| A．chased | B．to be chased | C．be chased | D．having been chased |
Mrs. White showed her students some old mapsfrom the library.
| A．to borrow | B．to be borrowed | C．borrowed | D．borrowing |
Suddenly the idea came to me I might turn to Mr. Smith for help.
| A．what | B．that | C．which | D．whom |
It is still unknown_______ caused the accident last Saturday.
| A．that | B．when | C．what | D．how |
____ wants to stay in a hotel has to pay their own.
| A．Anyone | B．The one | C．Whoever | D．Who |