Mike is a student at a famous university, _______ for a doctor degree.A．studied

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Mike is a student at a famous university, _______ for a doctor degree.A．studied

题型：不详难度：来源：
Mike is a student at a famous university, _______ for a doctor degree.
A．studiedB．studyingC．to have studiedD．to be studying

答案
B
解析
略
举一反三
Rather than ______ the plane all the way, they decided _______ to Vancouver.
A．taking, flyingB．take, to flyingC．take, to flyD．to take, to fly

题型：不详难度：| 查看答案

George, the lonely tortoise, was said ________ on a tiny island of Pinta in 1971．
A．to have discovered B．to have been discovered
C．having discoveredD．having been discovered

题型：不详难度：| 查看答案

The 2008 Olympic Games,_______in Beijing, impressed the world deeply.
A．to be held B．heldC．to heldD．holding

题型：不详难度：| 查看答案

Passengers on board aren"t allowed _____ calls during take-off．
A．making or receivingB．to make or receive
C．to have made or receivedD．having made or received

题型：不详难度：| 查看答案

Sam enjoys ______ stamps．And now he has 226 of them.
A．collectB．collectedC．collecting D．to collect

题型：不详难度：| 查看答案
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