George, the lonely tortoise, was said ________ on a tiny island of Pinta in 1971

题型：不详难度：来源：

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 discovered	D．having been discovered

答案

解析

略

举一反三

The 2008 Olympic Games,_______in Beijing, impressed the world deeply.

A．to be held

B．held

C．to held

D．holding

题型：不详难度：| 查看答案

Passengers on board aren"t allowed _____ calls during take-off．

A．making or receiving	B．to make or receive
C．to have made or received	D．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．collect

B．collected

C．collecting

D．to collect

题型：不详难度：| 查看答案

．Mother is always telling me _______ home before 6: 00 pm．

A．come

B．came

C．coming

D．to come

题型：不详难度：| 查看答案

His boring speech made most of us _______ asleep．

A．fall

B．fell

C．falling

D．to fall

题型：不详难度：| 查看答案