波形梁板基底金属厚度:仍然是英语题!!!!!

来源:百度文库 编辑:高校问答 时间:2024/07/08 12:30:34
1.We are b______ with work,so I have no time to play.
2.Don't worry.Let me h______ you.
3.Tennis is an e_______ in the Olympic Games.
每个一词!

busy
help
event