语境填空
【小题1】They________(装饰) the apartment with streamers and party lights.
【小题2】After all，the scientist is engaged in serious research to uncover the very nature of the__________(身体的) world，and the baby is，well，just playing...right?
【小题3】Rani's friendliness－her warm smile，her nods，her ‘I'm here for you’ attitude－were all silent________(信号) that didn't travel through wires.
【小题4】After a few minutes of contact comfort，it obviously begins to feel more________(安全的)．
【小题5】He is______________(自信的) about the future of the project.