1、Exactly__________ the potato was introduced into Europe is uncertain,but it was probably around 1565.
2、__________we understand things has a lot to do with what we feel.
3、Every year,__________makes the most beautiful kite will win a prize in the Kite Festival.
4、It is often the case__________anything is possible for those who hang on to hope.
5、The Sting four years later had its root in the fact __________although there was an age difference, we both came from a tradition of theater and live TV.
6、The question was brought to life again __________a person has the right to end his or her own life and a doctor has the right to assist.