John did the task____ his sister

Why didn’t you go to the gathering yesterday? ——It rained so hard and in addition, I ________ an important essay the whole morning

How about playing basketball after thefinal examination–______.

If I _____ Barack Obama, I ______ to receive the Nobel Prize for Peace. 　　 — Really? Why? 　[ ]

Did you go to the open-air concert?— No. We ____. but we spent too much time shopping.[ ]