用正确的be动词（am,is,are,were）填空.
问题描述：
用正确的be动词（am,is,are,were）填空.
1.They______unhappy yesterday.
2.The students______free today.They______going to play in the park
this afternoon.
3.His mother______ill yesterday.She ______better now.
4.Where ______ you last night?I______at the office.
5.______Jim and Kate at school yesterday afternoon?Yes,they______.
答
1.They were unhappy yesterday.2.The students are free today.They are going to play in the park this afternoon.3.His mother was ill yesterday.She is better now.4.Where were you last night?I was at the ...