根据首字母写单词.

根据首字母写单词.
1:The problems have not been sovled yet.It is quite o_ that they must be very difficult.
2:I am very c_ to know why you took the job after telling me you would not.
3:Bank of China,based in Beijing,has a lot of local.b_ all over the country.
4:Passing the driving test may be easy in t_ but it is not so easy in practice.
5:I used to keep two dogs .One dog stayed outside at night,and the other was kept w_the house.
6:They are conducting scientific _(研究）into the cause of skin cancer.
7:Last week our class held a heated _(辩论）on how to improve our oral English.