Ⅰ.单句语法填空
1.In my opinion,there is no point being_upset(upset)about it.
2.It was difficult to_calm(calm)her down,as she was too excited.
3.Having_suffered (suffer) such a heavy loss,the boss didn't have the courage to go on with his business.
4.There is much chance that Bill will recover from his injury in time for the race.
5.After the explosion happened in Tianjin,we were_concerned (concern) about it.