根据下列句子及所给汉语注释，在句子右边的横线上写出空缺处各单词的正确形式。（每空只写一词）。

1．On his         （到达）at the airport, he called a taxi.

2．He not only made a ______(允诺) but also he kept it.

3．I’d like to write him a letter, but I don’t know his _______(地址).

4．In Barcelona the Chinese team got 16 gold       (奖牌), of which 12 were won by women.

5．He         （耳语）something into my ear, which I didn't quite understand.

6．They are          (有经验) teachers who always makes their classes lively and interesting.

7．If all goes well, a Guinness         （官员）will come to inspect your attempt.

8．The newly born baby was fed on       (速溶) powdered milk because mum was ill.

9．We        （还价）with her about the price, but we couldn't bring it down.

10．I don’t think that it would be of much       (实用) value to either of us.