----Do you have any idea why Mark is leaving?---- No. In fact, everyone is ________about it．

---Could you help me take care of my pet dog on the 19th?--- I’m afraid I’m not          that day.

 Though ___________ to see us, the professor gave us a warm welcome.

.Because of the snow, the village was not ___________ by car.

I think you should go back to your _____ plan, which is much more practical than the present one.