用and还是or,1.We have no classes on Saturday and Sunday下面两句中的and是否需要改为 or,1.We have no classes on Saturday and Sunday 2.We don't have classes on Saturday and Sunday
问题描述:
用and还是or,1.We have no classes on Saturday and Sunday
下面两句中的and是否需要改为 or,
1.We have no classes on Saturday and Sunday 2.We don't have classes on Saturday and Sunday
答