．______ the satellite launch drawing near, the research workers put their hearts to the test and always stayed up late.
| A．As | B．Because | C．With | D．While |
-Car prices have been going down sharply in the last 20 years.
-It's not surprising because the law of market __________ the price of a product.
| A．is controlling | B．controls |
| C．has controlled | D．controlled |
Undoubtedly, life teaches us not to regret over yesterday, for it has passed and is __________ our control.
| A．against | B．beyond |
| C．in | D．on |
__________ apple fell from the tree and hit him on __________ head.
| A．An; the | B．The; the |
| C．An; 不填 | D．The; 不填 |
The man pulled out a gold watch，__________ were made of small diamonds.
| A．the hands of whom | B．whom the hands of |
| C．which the hands of | D．the hands of which |
Michael's new house is like a huge palace，__________ with his old one.
| A．comparing | B．compares |
| C．to compare | D．compared |