Civil legal acts refer to the legal acts of citizens or legal persons to establish, change, or terminate civil rights and civil obligations, including civil legal acts with time limits and civil legal acts with conditions. The conditions attached to civil legal acts occur in the future as agreed by the actor. Uncertain legal facts. A civil juristic act with a time limit refers to a civil juristic act in which a certain period of time is agreed in the civil juristic act and the arrival of that period is the premise of the civil rights, obligations, changes, and eliminations of the actor. According to the above definitions, which of the following is civil legal acts with conditions? ['A and B have grievances. In order to get revenge, A privately negotiates with C and promises that if C hurts B, he will give C 500 yuan.', 'A said to B, "If the sun rises from the west, I will give you the house. ".', 'A and B agree: B must withdraw money 20 days after the contract is signed.', 'A said to B, "If my daughter moves to another country, I will rent the house to you. ".']