The __________ of his books among parents and the recommendation of experts both at home and abroad have quickly made him a celebrity educator.
---- Have you been here long? ---- _______.
________ mud on his trousers brushes off easily.
The young lady was careful _________.
The bridge is so important to the people here that once ________ it must be carried out without delay.
Though they had a meeting yesterday, there is still much that remains______.