She stared at the painting,wonder where she ____it.

A.saw   B.has seen   C.sees   D.had seen

There were some chairs left over____ everyone had sat down.

A. when               B. until                        C. that                  D. where

 Whenever I met her, ________was fairly often, she greeted me with a sweet smile.

A. who          B. which               C. when                D. that

Only when ____hard____make your dream come true. 

A.do you work, you can   B.you work ,you can

C.do you work , can you   D.you work, canyou

.Either you or one of your students______to attend the meeting that is due tomorrow.

   A.are             B.is            C.have          D.be

 ____by the advances in technology, many farmers have set up wind farms on their land.

A.Being encouraged   B.Encouraging   C.Encouraged   D.Having encouraged

Bill suggested_____a meeting on what to do for the Shanghai Expo during the vacation.

A.having held  B.to hold    C.holding      D.hold

To my mind, she is the most wonderful teacher that I’ve ever known, _________ is able to get across to her students ________ she really thinks and means.

A. which; that     B. that; as            C. who; what         D. who; that     

. With the whole village _______, the villagers had to move to higher land, waiting for help.

       A. flooding                                                      B. having flooded         

C. flooded                                                       D. to be flooded

The problem with being a time waster is _____the online game playing often spills over into the periods of time that should be productive.

   A. what     B. which    C. that     D. whether