--We've cross-checked the data collected from the Internet.
--Good. Anyway,_______.
| A．you can't be careful enough |
| B．you are careful enough |
| C．you can't be so careless |
| D．you are never careless enough |
me tomorrow and I'll let you know the lab result.
| A． | Calling | B． | Call | C． | To call | D． | Having called |
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 |