what a surprise to get a letter from you at last.请问to 是做什么成分

I am at a loss what to do 中what to do 做什么成分 I want to get a letter from you （同义句） I look forward to ___ i'm very glad to (get to get a letter from )you 括号内的同义词 A.wr I'm glad to get a letter from you.They love playing basketba glad,get,I,from,am,to,letter,you,a连词成句 I am so happy to get a letter from you.I am so proud of your 判断句子错误,并改正 I hope to get a letter from you in English. I m very glad to get a letter from you.句子中词组有哪些, 英语：I am happy to get a letter from you.（改同义句） --What did you do last night.--I( )a letter to my father 请问what to expect from college life 这里的动词不定式做什么成分 Did you get a letter from your aunt in Paris last week?