Our friendship ______ quickly over the weeks that followed.
| A．had developed | B．was developing |
| C．would develop | D．developed |
In the countryside, wood can __________ a fire.
| A．be used to make | B．be used to making |
| C．use to make | D．used to making |
We will be given a（n）__________ to ask questions at the end of the lecture.
| A．presentation | B．explanation |
| C．opportunity | D．possibility |
Every time she tried to argue with her husband, she __________ crying her eyes out.
| A．picked up | B．stayed up |
| C．ended up | D．kept up |
While studying, fix your mind on what is really important, or you will __________ remembering nothing.
| A．take up | B．lead to |
| C．stick to | D．end up |
Though __________ to see us, the professor gave us a warm welcome.
| A．surprising | B．surprised |
| C．to surprise | D．being surprised |