1.I have been to n amusement park.(改为否定句) I

不能选C的理由在于amusement park的具体意思.他并不是特指某一家游乐园,因此该句应理解为：我从没去过游乐园,而非我没去过“那家”游乐园.因此不能选C.如果后面的amusement park带了具体的名字,比如说huanlegu amusement park,那就应该选C.

选A
amusement park这里需要加上定冠词the表示特指某一处游乐场.
a two-kilometer-walk是固定搭配,指一段2公里的步行路程.

辛辛苦苦写了半天,
Carrie:hello,Jim,haven't seen you around lately,where have you been?
Jim:hi,I went to the new amusement park with my friends last weekend.it's awesome.
Carrie:Really?I haven't got the chance yet,tell me more about it.
Jim:Sure,the park consists of four theme land,Main street,Adventureland,Fantasy land and Tomorrow land,I love Tomorrow land the best,it's incredibly high-tech and exciting,each equipment is using touching-screen and can broadcast in 4 foreign languagues,It's totally cool.
Carrie:Sounds interesting,anything else?
Jim:I guess girls would prefer Fantasy land,it's a little bit quiet and has colorful merry-go-round,excursion boat,revolving boat and mini-train there.You can take your time and no need to hurry.
Carrie:Eh,I think so,one more question,is there any good restaurant in the park?I'm easily starving when I play hard.
Jimmy:Definitely,there are a few cute restaurant in each land,decorated very creatively,like a tree restaurant or animal restaurant,but I don't want to waste too much time on dining,So I went to a snack bar instead,by the way,the Chichen wings are really delicious.
Carrie:Maybe you are right,anything unusual about the other two theme land?
Jim:Main street is for some normal amusement,you can get on a ferris wheel to have a view of the whole park ,or have a rest on a swinging boat.You can also watch a show on the center theatre.
Carrie:I love ferris wheels!I never missed any ferris wheels whenever I go to amusement park.
Jim:Then this must be the right place for you.
Carrie:What's fun about the adventure land?
Jim:Well,Adventure land is for high-speed exciting equips.There are all kinds of
roller coaster,go-cart,astrojet,giant stride and mad-mouse.Kids are all screaming in adventure land,especially on the new Roller Coaster which runs at 180km per hour.Only the craziest people would try that.
Carrie:Thanks,it's really impressive,
What if you got too tired after a entire day,how can you leave the park quickly?I don't want to walk out,that will be too frustrating.
Jimmy:Don't worry,the park has monorail waiting by the road,whenever you get tired you can get on the train and reach the exit in 5 minutes,Also there are a few peaceful garden outside the park where you can take a good rest.
Carrie:Gosh,That is exactly my dream!
Jim:Hey,I have an idea,Let's go to the park together some time,what do you say?
Carrie:Deal,I can hardly wait.

My favorite amusement park is the Happy Valley.the view around happy valley is beautiful ,with two big mountains and a clean lake in it.there are many interesting equipment in happy valley,such as roller coaster,space ship,ufo and so on.i like roller coaster the best,because the speed is so fast that you think you are even flying.That is so excited.
thus,my favorite amusement park is the happy valley,and it is really a good place for recreation.这些都是原创啊我打了半天的一定把分给我吧谢谢.

游乐园.

一般指游乐园,名词加名词的形式,这个好像是专有名词,不可以加的吧

water park以水上游乐为主
amusement park是指游乐园 除了水上游乐项目还有其他的游乐项目

如果前文提到过这个公园的名字,作为特指,可以是大写；但是没有提游乐园的名字时,就不需要大写.