根据括号中所给的汉语写出单词，使句子意思完整正确
【小题1】Thank you for __________us to your birthday party.（邀请）
【小题2】Can you swim   ____________（穿过）the river?
【小题3】The girl looks after the   ____________（生病的）mother at home.
【小题4】--- How many __________ (牙齿) does the little baby have?       ---Only two.
【小题5】Three Chinese                (飞行员) have been there so far.