The new education system is said to be _______ to the successful development of the country.
| A．apparent | B．central | C．allergic | D．generous |
With a lot of difficult problems_____, the newly-elected president is having a hard time.
| A．settled | B．settling | C．to settle | D．being settling |
You shouldn’t keep silent when ____
| A．speaking | B．spoken to | C．spoken | D．speaking to |
The students expected ____ more reviewing classes before the exam.
| A．there to be | B．there are | C．there being | D． there to have |
___to complete the job on time, they set out to work immediately.
| A．Determined | B．Be determined | C．Having determined | D．To be determined |
My watch has stopped, so I will get it ______ this afternoon.
| A．repaired | B．repairing | C．repair | D．to repair |