依次填入下列 各句横线处的成语,最恰当的一组是( )(1)遵义会议之后,毛泽东通过四渡赤水调动敌人,率领3万多红军,通过( )的征战,打了一场打胜仗,最终跳出了重重包围。(2)屠呦呦和同事们通过大量搜集中药药方,对中草药提取物进行筛查,直到第191次实验,才发现了青蒿素,这个过程充满了( )。(3)吴锦泉老人汶川地震之后累计捐款37000多元,但老两口的日子是充满( )的,他们住着三间破旧的瓦房,磨一把刀一元钱,没有其他经济来源。
George Bush______was a politician,like his son George W.Bush.
. —Jerry, How did Tom ____the news?—He said nothing.
You speak very good Chinese–ThanksI _______ it for 4 years before I came to China
How long do you think it will be __________ China sends a manned spaceship to the moon— Perhaps two or three years.