Mr. Zhang once taught in a remote village in Anhui province as a volunteer, _______was accessible only on foot.
As soon as he comes back, I’ll tell him when __________ and see him. \
--- Do you know our town well?--- No, this is the first time I _______ here.
Many of them turned a deaf ear to his advice, ________ they knew it to be valuable.
The Great Wall is _______ tourist attraction that millions of people pour in every year.
–- Excuse me, would you mind answering a few questions?--- Well, I don’t know. I’m in a hurry _______.