30.I wrote emails to my sister and brother last week. To my disappointment,_______of them wrote me back.
The evening party ___ cheers but everyone was still immersed in the happy atmosphere of it.
In the past few years the worked ___ a lot of suggestions but none of them was adopted.
It is ___ of him to go to work without breakfast.
He issued a/an ___ to us to settle the trouble in five days, but nobody accepted it.
In many people’s opinion, that company, though relatively small, is pleasant ___.