Chinese Speaking Exam

The theme is about your a birthday party and shopping. I don't feel that it flows very well and I don't think it's not long enough to last for 5 minutes, so any recommendation is appreciated.

去年八月一号我开了擺設了一个生日聚会。我的有很多朋友來参加了, 弄得非常熱鬧。我们也有去商場買了很多东西 (shopping)。我买了一条红色的围巾.  还我的朋友买了一本漂亮的本子和两张个西国光盘/碟。我都想要买光盘但是不過太贵了, 今天不想破費這么錢。[Fillers: 看看还有更好的東西去買. 終於沒見到心中可要的東西. 只好帶着一條絲巾回家. 真可惜, 他日吧!]

六点半我们去到一间中国餐厅. 我们吃了很多东西, [吃得津津有味.]
我们一齐吃這么美好的鸡肉玉樹金华火退鸡, 滑蛋蝦仁炒面, 長寿面, 烤鸭和生煎糯米饭。[All these are filler words to length your speech.  You can delete them if the length is too long.  However, they add a better description]

我喝了可乐和我的朋友们喝汽水。我只喝可口可乐. 我的朋友们唱了生日歌给我。真是一个完美的生日气氛, 多年不会忘記. 个蛋糕虽然很又大和又漂亮, 看起來令人垂涎三尺! 可是我不想吃。我已經吃這么了, 我也怕今晚难睡...个蛋糕很好吃。

我的我的朋友早不知我的欢愛因此厚厚封/紅包/利是/或道买什么东西给我所以他们送钱和巧克力给我。[now, the way you write, means that they are not close enough to know your tastes in things.  It would be better to write this way to show how close you are with them.  Chinese are very particular.  Hence we give money instead]

If you need more, here's a better conclusion, 虽知人有不散宴席, 有這么多的好友, 不怕不会常常重聚欢天.

I think if you speak slowly and with dramatic pauses here and there, it will fulfill the time requirement.

Chinese Speaking Exam

The theme is about your birthday party and shopping. I don't feel it flows very well and I don't think it's enough to last for 5 minutes, so recommendation is appreciated.

去年八月一号我开了个生日聚会。我的朋友去参加了。那天我们买东西 购物(shopping)的时候，我买了条红色围巾还给我的朋友买了本漂亮本子和两张西国光盘。我都也想给自己买光盘，但是太贵了。
六点半的时候我们去中国餐厅吃了很多东西。 我们一齐吃鸡肉, 炒面, 寿面, 烤鸭和米饭。 ，有鸡肉、炒面、寿面、烤鸭还有米饭。我喝的可乐，我的朋友喝的汽水。我的朋友她（she）/他（he）还唱生日歌给我听呢。

还有，那个蛋糕很大和 、很漂亮、很好吃，我不想  有些舍不得吃它。

个蛋糕很好吃。 我的朋友不知道买什么东西  礼物给我，所以他们送钱和巧克力给我的。

red mark : is the best mothed

blue mark : make the sentence be more beautiful

Chinese Speaking Exam

The theme is about your birthday party and shopping. I don't feel it flows very well and I don't think it's enough to last for 5 minutes, so recommendation is appreciated.

去年八月一号我开了生日聚会。我的朋友们（if more than one friends, use "们" to show it）参加了。我们去买东西 (shopping)。我买了条红色围巾还我的朋友买了本漂亮本子和两张西国光盘。我都想买光盘但是太贵了。
六点半我们去中国餐厅吃很多东西。
我们一齐吃鸡肉, 炒面, 寿面, 烤鸭和米饭。
我喝了可乐和我的朋友喝汽水。我的朋友唱生日歌给我。个蛋糕很大和漂亮我不想吃。个蛋糕很好吃。
我的朋友不知道买什么东西给我所以他们送钱和巧克力给我。

Not bad. It can be better if you can make things connected. For example, you talked about the birthday party, right? But you mainly focused on shopping and eating, not much about the party, making it less relevant to the topic "birthday party and shopping". Below is what I tried to reorganize the words and I hope it will be helpful for you.

去年八月一号我开了一个生日聚会。我的朋友参加了。那天我们一起去购物 (shopping)。我买了条红色的围巾，我的朋友买了本漂亮的本子和两张西国光盘(is "西国" for "western countries"? if so, just say “西方”）。我也想买光盘但是我觉得太贵了。
晚上六点半我们去了中国餐厅，吃了很多东西。有鸡肉, 炒面, 寿面, 烤鸭还有米饭。我点了（ordered）可乐,我的朋友点了汽水。后来我的朋友唱生日歌给我。个蛋糕很大和漂亮我不想吃。个蛋糕很好吃（it seems a little contradicted.. I am curious did you eat the cake?）然后我们一起吃了生日蛋糕，蛋糕很漂亮也很美味。
我的朋友们不知道买什么东西给我所以他们送钱和巧克力给我。

Chinese Speaking Exam

The theme is about your birthday party and shopping. I don't feel it flows very well and I don't think it's enough to last for 5 minutes, so recommendation is appreciated.

去年八月一号我开了生日聚会。我的朋友都参加了。我们去买东西 (shopping)。我买了条红色围巾还我的朋友买了本漂亮本子和两张西国光盘。我也想买光盘但是太贵了。
六点半我们去中国餐厅吃很多东西。
我们一齐吃鸡肉, 炒面, 寿面, 烤鸭和米饭。
我喝了可乐和我的朋友喝汽水。我的朋友唱生日歌给我。个蛋糕很大和漂亮我不想吃。个蛋糕很好吃。
我的朋友不知道买什么东西给我所以他们送钱和巧克力给我。