According to my father, movies, such as the one you talked about yesterday, _____ not worth seeing.
| A．are | B．do | C．is | D．does |
We want such materials ________ can bear high temperature and pressure.
| A．that | B．as | C．what | D．which |
Space exploration has been made ______ with the development of modern science and technology.
| A．it possible | B．it was possible | C．that possible | D．possible |
A mysterious illness, referred to as “ a typical phenomena”, has been brought under control, the government said on Wednesday, ______ no cause of it has been made public.
| A．though | B．when | C．that | D．because |
Before leaving home, make sure to turn off the electricity, lock the door, ______ the windows open.
| A．and not to leave | B．instead of leaving |
| C．rather than leave | D．and not leave |
The idea for the new machine came to Mr. Baker ______ to his invention recently.
| A．while devoting | B．while devoted |
| C．while he was devoted | D．while devoting himself. |