22．________he is, he seldom shows his inventions to others.A．Inventor as B．As an

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22．________he is, he seldom shows his inventions to others.

A．Inventor as	B．As an inventor
C．Being an inventor as	D．Inventor although

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举一反三

12.So absorbed__________in her work that she didn"t realize I was behind her.

A．did she

B．was she

C．she did

D．she was

题型：不详难度：| 查看答案

34．I have had some bad times before, but seldom________so helpless as now.

A．I had felt

B．have I felt

C．I have felt

D．had I felt

题型：不详难度：| 查看答案

Only after you have known someone for some time producers his real worth.

A．you begin

B．do you begin

C．you do begin

D．begin you

题型：不详难度：| 查看答案

The ship would have sunk with all on board ______ for the captain.

A．if it was not

B．had it not been

C．if it has not been

D．not had it been.

题型：不详难度：| 查看答案

Bill was staying on a farm with his uncle last summer. So ___ Mary.

A．did

B．has

C．was

D．is

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