The teacher asked a very difficult question. It was Ted who finally _____ a good answer.
It is five years since my dear aunt _______ here.
It ________ nearly two weeks ______ I had received his letter.
----This returned Chinese scholar has become one of the top experts in this field.----Yes,I know him very well.He____in Africa with animals for eight years.
----Does Liu Hua serve in the army?----No,but he ___in the army for three years.
The boss praised the young man for his hard work, though he ___ experience.