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:I don’t know why I haven’t heard from my parents________(最近).
小题2:We are about the same age,but our__________(经历) are quite different.
小题3:Mr Jiang is a famous scientist with lots of___________(知识).
小题4:We should try our best to protect the_____________(环境).
小题5:——Do you have a camera?
——Sorry, I_________(借) it to Jim last Wednesday.