Newton was sitting under an apple tree ______ an apple fell onto his head.
| A．when | B．while | C．after | D．before |
Every time I went to visit Mount Tai, it __ me with its nature beauty.
| A．impresses | B．confirms | C．provides | D．expresses |
All the staff in our company are considering ___ to the city center for the fashion show.
| A．to go | B．having gone | C．to have gone | D．going |
Only by shouting at the top of his voice, ___.
| A．he was able to make himself hear |
| B．was he able to make himself hear |
| C．was he able to make himself heard |
| D．he was able to make himself heard |
The hill ____ is covered with tress is called Huang Hill.
| A．of which top | B．whose the top |
| C．whose top | D．top which |
Progress so far has been very good, ____, we are sure that the project will be completed on time.
| A．otherwise | B．therefore | C．besides | D．however |