1.I have explained everything ____ I can to you.2.I used to ____ poems when I was his age(1)1.that 2.which 3.who 4.what (2)1.write 2.wrote 3.writing 4.written
问题描述：
1.I have explained everything ____ I can to you.2.I used to ____ poems when I was his age
(1)1.that 2.which 3.who 4.what (2)1.write 2.wrote 3.writing 4.written
答
1A不是很确定，something之类的定语从句用that，2A
答
第1题选that，是定语从句。先行词是不定代词everything，引导词用that。句意为“我已经把我能解释的都解释给你听了。”
第2题选write，used to do sth.过去曾经做某事，或过去经常做某事。这句话的意思是“当我像他这么大的时候，我经常写诗。”
答
(1)that (2)write
答
(1) 1.that
(2) 3.write
（used to 后面用infinitive）
答
1.I have explained everything __that__ I can to you.
2.I used to __write__ poems when I was his age