Many clothing manufacturers now substitute artificial silk _____ natural silk to cut down costs of production．

       ideas and contents of the 60th national day, the great ceremony was very successful.

No matter when ther your job is important,you can contribute to social harmony that will, ______ ,benefit the reconstructioon effort in the quake - hit region.

---When will you be back?
---________.We'll meet at the end of the month.

The peace-keeping Chinese officers are still serving in Haiti ______ the continuous aftershock activities.

It’s reported that the government has determined to further its education reforms; _____, it will reform middle school education to lessen the burden of students.

The average temperature in．Tibet has risen      0.32 degrees centigrade every decade since 1961, according to the China Meteorological Administration,． 

Those who are ______ the proposal are expected to discuss it in detail after the meeting.

We should advance step by step and not reach ______ what is beyond our grasp.

I thought my eyes must be playing tricks _______ me.