1 . My cousin promised his mother never to lie to her, _______, he did so again. (用适当的词填空)

2 . The devoted mother is greatly concerned with her children, ________, she has won great success in educating them. (用适当的词填空)

3 . Playing on a frozen sports field sounds like a lot of fun. Isn’t it rather risky, ________? (用适当的词填空)

4 . When the passengers get off the bus, they are reminded not to leave any of their belongings   ________. (用适当的词填空)

5 . He didn’t care about his son, let ______ his parents. (用适当的词填空)

6 . The little girl walked there to pick ________the rubbish.(用适当的词填空)

7 . Did you have _____ bother finding the house? (用适当的词填空)

8 . There is ________ little water in the glass that I can’t drink any more. (用适当的词填空)

9 . We are trying to raise public awareness of environmental protection, ________(particular) air pollution. （所给词的适当形式填空）

10 . We must try our best to seek _____ a solution to the problem. (用适当的词填空)