1 . It is no use ______ (advocate) improving public transport unless we can pay for it. (所给词的适当形式填空)

2 . Guess the meaning of a new word from the context instead of r______(查阅) to the dictionary. (根据中英文提示填空)

3 . Cover the burnt area with a loose clean cloth. ____________ the injured areas is a bad idea, as it will keep the heat in the wounds and may cause infection…If the victim is suffering from second or third-degree burns, there ____________ to take him/her to the hospital at once. (根据句意填空)

4 . If you see someone choking, first ____________. Then, make sure the victim is really choking: A choking person cannot speak. ____________ will often force out the obstruction. (根据句意完成句子)

5 . We as individuals can also reduce our “carbon footprint” by _______________ carbon dioxide our lifestyles produce. (根据句意填空)

6 . On ______ (arrive) at the airport, we all were welcomed warmly. (所给词的适当形式填空)

9 . They started ____________(宣传) the new model on television before it was in the showroom. (根据汉语提示单词拼写)

10 . 把自己暴露在阳光下太久会对你的皮肤有害。(动词-ing形式短语作主语)
__________ will be harmful to your skin.