The room is empty except for a bookshelf ________ in one corner.
| A．standing | B．to stand |
| C．stands | D．stood |
Mountain climbing ______ be really dangerous at times even though it is challenging and exciting in general.
| A．can | B．should | C．shall | D．must |
The music, ____________ pleasant, was soon well received when it was taken to the stage.
| A．sounded | B．being sounded | C．sounding | D．having sounded |
----Did the reference give the information you needed?
----Yes, but it, I had to read it entirely.
| A．to find | B．having found | C．finding | D．find |
You ________ your son to watch TV for too long hours! See, Mr. Morrison called that he didn’t finish his homework yesterday.
| A．are always permitting | B．have permitted |
| C．permit | D．permitted |
If you are not sure how to use the words, you may ______ the words in your handout.
| A．pick up | B．deal with | C．refer to | D．look up |