英语题，用所给动词正确时态填空

显示全部楼层 · 2011-8-1 10:40:26

用所给动词正确时态填空
1. You should go to bed. You ____ (watch) TV for 5 hours.
2. I ____ (write) letters since breakfast.
3. I ____ (write) 3 letters since breakfast.
4. Sorry,but Mr.Smith ____(leave) for Beijing
5. I ____ (look) for him everywhere,where can he be?
求求各位了，谢谢各位了！！！

千问 · 2011-8-1 10:40:26

have watched现在完成时have been written现在完成进行时一直在做某事have written has left have looked...

千问 · 2011-8-1 10:40:26

1.havewatched2.have been writing3.have written4.has left5.have looked...

千问 · 2011-8-1 10:40:26

have been watchinghave been writinghave writtenhave lefthave been looking...

千问 · 2011-8-1 10:40:26

1.have watched2.have writen3.have already writen4.has left5.looked...

千问 · 2011-8-1 10:40:26

1. You should go to bed. You _have been watching___ (watch) TV for 5 hours.2. I _have been writing___ (write) letters since breakfast.3. I _have written___ (write) 3 letters si...