By the time I reach the age of sixty, I hope to be healthy enough to travel ___________ .
Only in a few countries in the world _______ a reasonable standard of living.
They came together with the same ______ about the earth’s environment and the same dream of co-existing peacefully.
Hurry up! By the time we get to the church, the marriage service _____.
. Most of the young men looking for adventure in the rainforest had difficulty ___ to the terribly hot weather.
Chinese news reported today that a woman in Hongbai had been rescued after ____ in a tunnel for nine days.