______ riding shared bikes（共享单车） is an environmentally friendly way to travel，many of the bikes are thrown everywhere．（ ）
A．AlthoughB．AsC．UnlessD．Until
﹣Over 100 countries and organizations _____warm support to the Belt and Road initiative（倡议） since 2013．
﹣Wonderful! Our circle of friends is growing bigger!（ ）
A．giveB．have givenC．gaveD．will give
﹣Can you tell me when you are going to arrive there？
﹣I'm not sure．But I'll ring you up as soon as I _____there tomorrow．（ ）
A．arriveB．arrived
C．will arriveD．am going to arrive
﹣Could you go to the new movie with me now？
﹣Sorry，I _____．Look，it's time for me to watch The Reader on CCTV．（ ）
A．can'tB．canC．needn'tD．must
﹣Most of the wild animals are _____because of their bad living environment．
﹣So we must do something to save them．（ ）
A．in needB．on dutyC．at workD．in danger
﹣Would you like some milk or coffee，sir？
﹣_______．Just a glass of water，please．（ ）
A．BothB．EitherC．NeitherD．None