问题补充：
指出错误并改正
【小题1】He has decided giving up smoking.
AB CD
【小题2】I considered to writing to him, but then decided to see him
ABCD
【小题3】It’s so hardto understand.
ABCD
【小题4】What about to read aloud to practice pronounciation ?
A BCD
【小题5】Do exercises isａ way to keep healthy.
ABC D C to give up
答案：
(答案→)C to give up
解析：
【小题1】decide后一般接不定式作宾语，故改为： to give up
【小题2】consider后面一般用动名词作宾语，故改为： writing
【小题3】考查too adj to结构，太……而不能。
【小题4】about是介词，后面接名词或者动名词作宾语。
【小题5】考查动名词做句子主语，动名词表示抽象动作，故改为Doing
