_________ is well known to the peasants,pests continue to eat crops, damage.
| A．It;causing | B．As;caused |
| C．It;caused | D．As;causing |
With real estate （房地产）______ in economy, a lot of rich farmland had to ______ new houses and offices in the area.
| A．leading the way; make way for | B．led the way; made the way |
| C．to lead the way; be made the way for | D．leading way; be made the way for |
He suffers two heart attacks in a year. It hasn’t stopped him drinking wine, ______.
| A．though | B．either | C．too | D．neither |
______ the worker’s working efficiency, the manager will allow him to have a coffee break.
| A．Improving | B．To improve | C．Having improved | D．Improved |
John’s success has nothing to do with good luck. It’s years of hard work ______has made him what he is today.
| A．why | B．when | C．which | D．that |
The country life he was used to ______ greatly since 1998.
| A．change | B．has changed | C．changing | D．had changed |