Jack climbed ______ to the top of the mountain though he is only a boy of ten.
Astronaut Zhai Zhigang has become the first Chinese_____in space.
Are they coming to help us? -- _____
_____the weather ,the sports meet will be held on time .
In front of the farmhouse ______.
Mr. Hopkins has not yet answered my question ______ I can go with him to______he calls the Underground Treasure House next week.