Make sure the gas is turned off after cooking, which would cause danger to our life.
The children are having a good time, ______ with sand, others with toys.
The reason ______ his coming to China is ______ he wants to study in China.
On the opposite wall _____ one map _____ dozens of pictures.
---____ will we have to go? ---Just one mile.Keep walking.
With so many children ____round the table, the food disappeared_______.