(2013·陕西，14)The witnesses ________ by the police just now gave very different descriptions of the fight.

A．questioned B．being questioned

C．to be questioned D．having questioned

(2013·四川，8)________which university to attend，the girl asked her teacher for advice.

A．Not knowing B．Knowing not

C．Not known D．Known not

________ it with me should be a good choice.Trust me!

A．When left B．Leave

C．If you leave D．Leaving

Please do me a favor—________ my friend Mr.Smith to Youth Theater at 7：30 tonight.

A．to invite B．inviting C．invite D．invited

The traffic rule says young children under the age of four and________ less than 40 pounds must be in a child safety seat

A．being weighed B．weighs

C．weighed D．weighing

________ blood if you can and many lives will be saved.

A．Giving B．Give C．Given D．To give

I can't stand ________ with Jane in the same office.She just refuses ________ talking while she works.

A．working; stopping B．to work；stopping

C．working；to stop D．to work；to stop

Isn't it time you got down to ________ the papers?

A．mark B．be marked

C．being marked D．marking

There is a new problem involved in the popularity of private cars ________ road conditions need ________.

A．that；to be improved B．which; to be improved

C．where；improving D．when；improving

Susan wanted to be independent of her parents.She tried ________ alone, but she didn't like it and moved back home.

A．living B．to live

C．to be living D．having lived