F. Complete the sentences with the words in parentheses.1. If I_____(have) wings, I_____(have to, not) take an airplane to fly home.
2._____(people, be) able to fly if they_______(have) feathers instead of hair?
3. This box has to be in Makassar tomorrow. I am going to send it by express mail. I'm sure if I_____(send) it today by overnight express, it____(arrive) in time.
4. I didn't know the Djuharie were going to bring two other people to dinner last night. If anyone else____(bring) an extra guest, we_____(have, not) enough seats at the table.
5. A: I don't understand anything in this class. It's boring. And I'm
getting a failing grade.
B: If l______(feel) the way you do about it, I______(drop) the class as soon as possible.
6. I've never understood why people build houses on flood plains. If we____(have) heavy rains, the river through my hometown______(rise, always) above its bank and______(flood) the low-lying areas of the town. Some houses have been flooded a half dozen times in the last 20 years.
7. A:I'm exhausted and we're no closer to a solution to this problem after nine hours of work.
B:Why don't you go home and get some sleep, and I'll keep
working. If I______(discover) a solution before morning,i_____(call) you immediately. I promise.
8. A: I can't believe that you haven't finished that report. What will I use in the committee meeting at noon today?
B: I'm really sorry. If I_____(know) you needed it today,I_______(stay) up all night last night and______(finish) it.​