what can I do ____ the environment?A.protect B.protects C.protecting D.to protect 为什么选择不定

What can I do>>>I can't use chinese now! What do you hink of soap operas?---____ A.I'd love to B.I think so C.I can't stand them D.So do I I don't konw what i can do here. To my want,I can't do anything.I can do what ,who can tell me? I don't know what can I do 还是 I don't konw what I can do I can't decicle ____ .A what to go B where to go C what to do it D how to do what can I do what can I do what can I do? what can i do I can't believe what you said ____ I see what you do.A.for B.unless C.if not D.without应该选 B 同义句:I don't know what I can do .转换：I don't know what ( ) ( ). now.feel very sad,i don‘t know i can do what who can tell me what can i do today i do what you don't do,tomorrow i do what you can't do看书时遇到的, what other things can I do for you?(改为同义句｝____ ____ can I do for you? I don't think he is right,____?A.do I B.isn't heI don't think I can right,____?A.do I C.can't what can i do for you?（同义句）____ ____ i help you? If you don't love me.what can I do?