---Are you satisfied with his school report ---Not at all It couldn’t have been ______

I think this pair of shoes doesn’t fit you It’s a bit large You’d better get a _____（单选）—4分

If the chosen topic for a conversation lesson is too general it will not excite the students, if it is too specific some students will be interested, and others not.（）

The loss has not yet been accurately, but it is believed to be well beyond a hundred million dollars.

—Are you pleased with your work?—Yes, it couldn't be

If a seaplane is not used as a means of transpiration on water but is capable of being used so，it shall（）.

A．It was not really a magazine.

It is not decided the conference will be held.

—Look at these tracks. It __________ be a wolf.
   —It needn't be. It __________ be a fox.( )

顺序执行下列命令： T=.F. F=.T. A=T B=F ?B.AND..NOT.A 显示的结果为( )。

Can you lower it a （）bit?

While some military planners claimed that it would be possible to win a war fought with nuclear weapons, many scientists argued that such a war could not truly be won, because the fallout from nuclear warfare would create a nuclear winter and it also would be rendering the earth uninhabitable.