问题：
【题文】-----I wonder if you could go with me to the supermarket.
------- Don’t disturb me. I _____________my experiment report all the morning and haven’t finished yet.
A．write
B．was writing
C．have written
D．have been writting
【题文】-----I wonder if you could go with me to the supermarket.
------- Don’t disturb me. I _____________my experiment report all the morning and haven’t finished yet.
------- Don’t disturb me. I _____________my experiment report all the morning and haven’t finished yet.
| A．write | B．was writing | C．have written | D．have been writting |
参考答案：