they are difficult to make 这里的不定式、做什么成分

difficult colors They are in difficult colors all things are difficult before they are all things are difficult before they are Nothing is difficult in the world if you put your heart into it,________?A.is it B.isn't it C.are they D.aren't they 请翻译All things are difficult before they are easy All things are difficult before they are easy. 请问All things are difficult before they are easy.. All things are difficult before they are easyYisi the things are difficult be fore they are easy while i admit that there are difficult problems,I don't agree that they can't be solved.翻译成汉语 They didn't find the lecture by the scientist difficult ------- they are some difficult math problems.改为单数句 ____ ____ difficult math problems. They are difficult.的同义句They are not ____ ____. Nothing is difficult in the word ,if you put your heart into it,____?A.are they B.isn't it C.is itquickiy They are drinking wine,aren't they? ________ (those,all,both) things are difficult before they are easy.Who_______(have,has) a bicycle?John does.Can you help me with the two watches?_______(no,both,some) of them don't work.________ (those,all,both) things are difficult before they are --i __(cant/couldnt) answer the __(rest/finished).they were __(too/very)difficult for me.--i __(cant/couldnt) answer the __(rest/finished).they were __(too/very)difficult for me.--french __(paper/tests) are awful.--im __(think /sur) ive got a l dolphins are smart because they can help people 同义句 dolphins can help people ,() they are smarti don't like math because it's a little difficult for me（同义句）math is () () difficult for me ,() i don't like it