Edison was a clever boy, and ______ he was fourteen, he had learned advance mathematics by himself.
| A．whenever | B．by the time | C．the moment | D．ever since |
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--------Have you asked somebody to repair the machine?
--------Oh, sorry, I forgot it. I _________for an engineer at once.
| A．am going to send | B．would send | C．have sent | D．will send |
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Do you think it is ____ good manners to hear others’ conversations in _____curious manner?
| A．the；a | B．/; / | C．/; a | D．the; the |
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Soldiers stood next to a police truck, looking at the crime scene _______ a woman was gunned down in a poor neighborhood of the border city of Iran October 18, 2009.
| A．that | B．which | C．where | D．why |
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In April, 2009, President Hu inspected the warships in Qingdao, ______ the 60th anniversary of the founding of the PLA Navy. 
| A．marking | B．marked | C．having marked | D．being marked |
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