AreyoustudyingEnglishanddoyouneedhelpwithgrammar？（16）___Well，youcanfindhelponlinewiththesetop5freeEnglishasaSecondlanguagewebsites．
1．Dave'sESLCafe
ThisisacompletewebsitethatcanhelpyoulearnandpracticeEnglish．Inthelearningcenter，youcanreadmanystoriesanddoalotofexercisestotestyourself．（17）___
2．About．com
YoucangetfreeEnglishcoursesfrom About．comandyou'llgetregulare-mailsthatwillhelpyoulearnEnglish．
3．（18）___
Youcanwatchvideosandlistentonewsstoriestoimproveyourlisteningandvocabularyskills．YoucanalsohearEnglishwordsandtheirmeanings．
4．Heinle's NewburyHouseDictionaryofAmericanEnglish
Doyouneedtofindthe definition （定义）ofaword？（19）___Youcanalsofinddifferentculturalfacts．
5．PersonalEnglish Portal （门户网站）on YouTube
Youcanwatchthisseriesofvideoson YouTube todevelopyourlisteningskills．Youcanalsodoasearchfor"learnEnglish"on YouTube tofindothervideos．TherearealsolotsofEnglishsongsforyoutolistenandrelax．EvenyoucanplayinterestinggamesorchatwithyourfriendsinEnglishonthiswebsite．（20）___
A．You are sure to learn a lot from all the five websites．
B．National Geographic．com．
C．Do you want to learn new vocabulary or slang？
D．Use this online dictionary to find simple and clear definitions，as well as example sentences and idioms．
E．You can also post questions and answers onto the help center．
F．This is a good way to practice English and have fun．
G．The Classroom by Voice of America．