22．The suggestion __that__ we should spend more time with children is supported by most mothers and teachers.

　　23．Give me your promise __that__ you will come to our party this evening.

　　24．The student asked me the question __whether__ the book was worth reading.

　　25．(2015·北京卷)I truly believe __that__ beauty comes from within.

　　26．Everywhere，even in the Antarctic，there are signs __that__ the earth is getting warmer.

　　27．(2016·江苏卷)It is often the case __that__ anything is possible for those who hang on to hope.

　　28．(2015·湖南卷)You have to know __where__ you're going if you are to plan the best way of getting there.

　　29．(2015·陕西卷)Reading her biography，I was lost in admiration for __what__ Doris Lessing had achieved in literature.

　　30．(2015·北京卷)__How__ we understand things has a lot to do with what we feel.

　　31．(2014·全国卷Ⅰ)Exactly __when__ the potato was introduced into Europe is uncertain，but it was probably around 1565.

　　Ⅱ.单句改错

　　1．When my parents got home，I asked if or not I could keep the dog and to my surprise they agreed.__if改为whether__

　　2．(2018·山西四校联考)When Eric got home，I hesitated for a moment and told him that truly happened.__that改为what__

　　3．(2018·合肥检测)If we try our best to get ahead，we will be able to achieve what we desire it.__删除it__

　　4．It is known to us what respect for one's parents is one of Chinese traditional moral values.__what改为that__

　　5. The most breathtaking moment is that the athletes are getting to the finishing line.__that改为when__

　　6．The reason is because some students have to get up early on weekdays to go to school far away from home.__because改为that__

　　7．I want to express my hope which all the young fellows can make full use of time，because time waits for no man.__which→that__

　　8．The woman said what she didn't know how to deal with the matter.__what改为that或删除what__

　　9．I once wondered that my wise father could be taken in by my stupid lie.__that改为why__

10．For most tourists warm Australian nights were which they adored most.__which改为what__