The first color TV set was considered by most people________this century.
| A．having been invented it | B．one of whom invented |
| C．who had invented it | D．to have been invented |
Lydia doesn’t feel like ________ abroad. Her parents are old.
| A．study | B．to study | C．studied | D．studying |
The book about environment ______ the importance of protecting the earth.
| A．starts | B．states | C．tells | D．says |
It was ______ back home after the experiment.
| A．not until midnight did he go | B．until midnight that he didn’t go |
| C．not until midnight that he went | D．until midnight when he didn’t go |
________ with the size of the whole earth, the biggest ocean does not seem big at all.
| A．To compare | B．When comparing | C．Comparing | D．When compared |
I would appreciate ______ if you could write to me as soon as possible.
| A．that | B．this | C．it | D．one |