Peter can be really difficult at times even though he is a nice person in general.为什么要用can不用其他的情态动词

can really be happy还是can be really happy Peter can be really difficult at times even though he is a nice person in general.为什么要用can不用其他的情态动词 some dogs can be really Peter ___ be really difficult at times even though he's a nice person in general.A shall B should C can D must really can Who can be really understand me?翻译成中文是什么意思, When you leave,you can really be happy? Really care about you who can be true friends. Life can be so cool^That's really really the point!的中文意思? learing can be real fun and easy还是learing can be really fun and easy 英语啊冤孽Peter()be really difficult at times even though he's a nice person in generalAshouldBshallCcan Good job! can help you be better.You are really great,really cute.You will be in my nice memor Your+dog+is+really+cute,+peter?为什么能用really I really hope I can be as I wanted to be tomorrow什么意思? What can Peter ------?怎么填 Peter is ___________.He is very fat.He really needs to do more exercise.I am in hurry, answer me as fast as you can. can tigers really swimming It can be really hard not to tell anyongthat you're feeling sad.是什么意思