答案+为什么________(plan)your trip schedule carefully and you wil
答案+为什么 ________(plan)your trip schedule carefully and you will have a more enjoyable journey. ________(host)the Olympics is as much a responsibility as a competition among countries.
____Planning____(plan)your trip schedule carefully and you will have a more enjoyable journey.___Hosting_____(host)the Olympics is as much a responsibility as a competition among countries. 一是祈使句,动词原形 二是动词再做主语 加ING