In fact fuels we burn and plant food we eat ________ their chemical energy in the form of heat.
| A．give in | B．give off |
| C．give away | D．give up |
The reports went missing in 2012 and nobodythem since.
| A． | sees | B． | saw | C． | has seen | D． | had seen |
Caroline doesn't have a gift for music，but sheit with hard work.
| A． | goes back on | B． | takes away from | C． | makes up for | D． | catches up with |
Although youfind bargains in London, it's not generally a cheap place to shop.
| A． | should | B． | need | C． | must | D． | can |
September 30 is the day_______which you must pay your bill.
| A．by | B．for | C．with | D．in |
I think Mrs. Stark could bebetween 50 and 60 years of age.
| A． | anywhere | B． | anybody | C． | anyhow | D． | anything |