47. Three hundred firemen raced to the hotel after a smoke detector ______ the alarm soon after midnight.
| A．set off | B．set out | C．gave away | D．gave off |
It is reported that the US uses ________energy as the whole of Europe.
| A．twice as much | B．twice as | C．twice more | D．as twice |
Why don’t you put the meat in the fridge? It will ______fresh for several days.
| A．be stayed | B．stay | C．be staying | D．have |
I don’t think she is a nice woman; I am her empty talk.
| A．grateful for | B．tired of | C．crazy about | D．concerted about |
--- Would you mind my coming over and having a look at your new garden? My little son’s curious about those roses you grow.
--- ______. You’re welcome.
| A．Yes, I do | B．Never mind | C．Yes, please | D．Not at all |
Yesterday we visited a newly-built museum, around ____ some fruit shops.
| A．which is | B．it is | C．them are | D．which are |