We would appreciate it if you could stay for lunch.— Sorry, I _____. I have another appointment.[ ]

The pair of shoes_________hand, and it _____ very comfortable.

When shall I hand in my report—As soon as it _______ tomorrow.

________ these experiments were successfully completed would we think of going into humans.

d farmer,________ the badly-injuredand wounded soldier, came out of the burning house, ________for help.