What good news! Such a successful gene ______ in pigs that it enables the pigs to produce human serum albumin, a protein made by the liver. Look! Here ________.
| A．have they modified…they come. |
| B．did they modify…come they |
| C．they have modified…are coming they |
| D．they modify…they are coming |
_______, they had no chance of winning the war.
| A．As they fought bravely | B．Bravely though they fought |
| C．Brave as they fought | D．Though they fought brave |
In order to do something meaningful, it’s necessary that you _______ determine what is really important.
| A．must | B．will | C．need | D．should |
The last four years _______ Gareth Bale transforming from an unwanted player to the most sought-after rising star in world soccer.
| A．have seen | B．had seen | C．are seeing | D．saw |
Steve Jobs is in a sense a hero, _______, I think, that will be remembered and honored forever.
| A．who | B．the one | C．which | D．one |
The two friends had a quarrel about money, but shortly afterwards they shook hands and _______.
| A．broke up | B．made up | C．came up | D．showed up |