Noonereallyknowsforsuremakesap

No one really knows for sure ________ makes a person become right-handed rather than left-handed.

A．whatever

B．who

C．what

D．whoever

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Mr．Jones was so late that his dinner got cold; his wife ______ warm it up．

A．must

B．had to

C．ought to

D．might

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---- Tom must have been in his girlfriend’s house on Christmas Eve, ________?
----- ___________．He was seeing a film all night long with us ．

A．mustn’t he；Yes ;	B．wasn’t he， No ;
C．hasn’t he；Yes;	D．didn’t he；No;

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--- How much do I owe you for lunch?
--- ．It’s nothing.

A．You’re welcome	B．Forget it
C．With pleasure	D．That’s right

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Is some German friends visited last week?

A．this school	B．this the school
C．this school one	D．this school where

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

A．Such construction robots are clever

B．So clever the construction robots are

C．Such clever construction robots are

D．So clever are the construction robots

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