.
He’s got himself into a dangerous situation ________ he is likely to lose control over the plane.
| A．where | B．which | C．while | D．why |
--- I know this is the latest type but it’s second-hand. $20--- that’s my last offer!
--- OK. It’s a(n) ____.
| A．business | B．trade | C．agreement | D．deal |
We should pay close attention to safety in schools because of frequent reports about accidents ____ students got injured or killed while in school.
| A．which | B．for which | C．in which | D．what |
I will lend you the money ____ you pay it back in one month.
| A．on condition that | B．in case |
| C．in order that | D．considering that |
To read Tolstoy (托尔斯泰) and ____ to the nineteenth century Russian literature are two main reasons for my taking Professor White’s course.
| A．to introduce | B．introduce |
| C．introduced | D．to be introduced |
--- Have you ever heard of an American president called Chester A. Arthur?
--- No, and he’s 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. being completely forgotten