28. The first thing she did _____ up to her trainer and thanked her.
| A．was go | B．was going | C．and went | D．Go |
I found the cat____ under the bed, who had caught a mouse.
| A．hiding | B．hidden | C．to hide | D．having hidden |
Those ___ to go to the exhibition should inform the office.
| A．not wanting | B．who not want | C．not wanted | D．are not want |
There were many more people who got injured in the big fire than ____.
| A．was reported | B．it was reported |
| C．were reported | D．they were reported |
_______ of water makes Death Valley a desert, but it is by no means devoid.
| A．Lacking | B．Being lack | C．Because of lack | D．Lack |
There are some police cars in front. What do you suppose ____?
| A．is the matter | B．is happened | C．is the wrong | D．the trouble is |