单项选择题

This is one of the most wonderful songs（）I have ever heard.

A．which
B．that
C．what
D．then

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单项选择题

（）that they may eventually reduce the amount of labor needed on construction sites by around 90 percent.

A．So clever are the construction robots
B．So clever the construction robots are
C．Such construction robots are clever
D．Such clever construction robots are

单项选择题

Having no money but（）to know, he simply said he would go without dinner.

A．not to want anyone
B．not wanting anyone
C．wanted no one
D．to want no one