Before I made any attempt, I used a stick to test the depth of the river, and _________ at the great depth of it, not daring to take further action.
For sustainable development, the government has decided to give __________ to those energy conserving and environmental-- friendly business in many aspects.
I counted the people the activity, and there were 286 of them.
They had kept working for several weeks everything was in order.
The headmaster who had the grand ceremony waved to the crowds with a smile .
When the market economy is introduced, many factories will not .