20．-Where have you been ?

　　 -I 　　　　　in the heavy traffic . Otherwise I 　　　　　here earlier .

　　　 A．have got stuck ; would have come 　　　 B．got stuck ; was

　　　 C．got stuck ; would have come 　　　　　　　 D．had got stuck ; would come

19．Not until all the fish died in the lake near the factory 　　　　　how serious the pollution was .

　　　 A．the manager realized 　　　　　　　　　　　　　 B．did the manager realize

　　　 C．the manager did realize 　　　　　　　　　　　 D．didn’t the manager realize

18．Children need many things , but 　　　　　they need love .

　　　 A．above all 　　　　　 B．in all 　　　　　　　　 C．as well 　　　　　　　 D．after all

17．He reminded me 　　　　　the letters to Jane ,and this 　　　　　me of the days that I spent with Jane .

　　　 A．to answer ; reminded 　　　　　　　　　　　　　 B．for answering ; reminded

　　　 C．of answering ; called up 　　　　　　　　　　　 D．to answer ; called up