完形填空。 KFC used to be very popular. Many people waited in a long 1 to buy food there. But these days, fewer people eat there 2 it's reported that some foods are dangerous. The 3 comes from Sudan l. It can make people more likely get cancer. So far, Sudan l has been found to be in five of KFC's foods. Sudan l is a red dye (染料). People use it to colour oils, but it should never 4 make food. Last week, health officials asked KFC to stop selling its food 5 Sudan l. Only after they pass inspection can they sell it again. 6 you ate some of the five foods last week, don't worry too much. The chance of getting cancer is very 7 as only a little is used in foods. (     )1. A. group (     )2. A. why (     )3. A. danger (     )4. A. used to (     )5. A. with (     )6. A. When (     )7. A. small B. line B. but B. problems B. be used B. has B. Whether B. hard C. time C. because C. quarrel C. be used to C.  without C. Since C. light D. row D. so D. trouble D. used D. have D. If D. large