George is going to talk about the geography of his country, but I’d rather he_______ more on its culture.
| A．focus | B．focused | C．would focus | D．had focused |
Some people thought ________ possible to live on out space in the future .
| A．it | B．it be | C．it is | D．that is |
_____his poor health ,he was still at work late into the night.
| A． Despite | B．Besides | C． Apart from | D．In spite |
I don’t think that rock music is terrible , ______?
| A．do I | B．don’t I | C．is it | D．isn’t it |
So little _____ with each other that the neighboring countries could not settle their differences.
A. they agreed B agreed they C. did they agree D. they did agree
Martin Cooper , a US researcher , was considered _______ the first cell phone .
| A．invented | B．to invent | C．having invented | D．to have invented |