They met with a lot of difficulties in building the railway in Tibet, but they _____until it was completed.
The old man died______ cold _______ a cold night.
The trees ___front of the house are ___the charge of Mr. Li.
—— Do you go there ___bus? —— No, we go there ___a train.
One___ five will have the chance to join in the game.
___the gate and you’ll find the entrance___the park___the other side.