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 |
The lady said she would buy a gift for her daughter with _____.
| A．20 dollars remained | B．20 dollars to remain |
| C．remained 20 dollars | D．remaining 20 dollars |
_____ she was sick, I was expected to take his place greatly surprised me, for I didn’t have much work experience.
| A．That if | B．That | C．If that | D．If |
—Did you have any difficulty catching yesterday’s lecture?
—No. The professor spoke very clearly to make his speech easy _____.
| A．understood | B．understanding | C．to be understood | D．to understand |
After months of voyage, Columbus arrived in _____ later proved a new continent.
| A．where | B．which | C．what | D．that |
—Do you think our team will win the game?
—I don’t know. But this is the last chance. We _____ them to.
| A．hope | B．require | C．prefer | D．demand |