16．It is________(具有挑战性的) for such a young boy to swim across the wide river.

17．British people eat a lot of________(甜点) after their main meal.

18．In order to________(获得) success，you must make every effort.

19．You can________(提高) your spoken English by practising speaking it every day.

20．I don’t have any________(额外的) time.I have been quite busy these days.

21．Mr Johnson didn’t a________the meeting because he had a bad cold yesterday.

22．His goals have e________him a place in the club’s first team.

23．During the Olympic Games，foreigners from different countries e________Chinese hospitality (好客)．

24．Mary’s performance on the test was below  a________.

25．Please give my  r________to your parents when you go home for your holiday.