The problem of global warming is serious. ______, the sea levels have risen a little.
| A．As a result | B．On the contrary |
| C．In particular | D．In other words |
– Thank you for your birthday gift. In fact, you couldn’t have chosen _________ for me.
– I’m glad you like it.
| A．a good one | B．a better one | C．a best one | D．the best one |
.Oil prices have risen by 32 percent since the start of the year，______ a record US $ 57.65 a barrel on April 4.
| A．reached | B．reaching | C．to reach | D．to be reaching |
_____ was known to them all is that Bob had broken his promise _____ he would give them a rise.
| A．As; which | B．What; that | C．It; that | D．It; which |
______earlier, I' d have told you.
| A．If I would have known it | B．Had I known it |
| C．If I knew it. | D．Should I know it |
. Please tell me how the accident _________ . I am still in the dark.
| A．come to | B．come by | C．come across | D．come about |