These eight original questions cover the four skills in the language accuracy and expression cluster. The questions become harder as you go.
Write each answer by hand before opening the explanation. You can time a session with the timed original practice session builder.
Questions
1. Choose the correct character
我们要学会（辨/辩/辫）别网上的消息是真是假。
Answer
辨. The action is telling real from fake, so 辨别 is correct. 辩 means argue, and 辫 means braid.
2. Correct the character
他自已把房间收拾好了。
Answer
自己. The word means oneself, which uses 己. 已 belongs to 已经.
3. Does the idiom fit?
考试没及格后，小丽才开始认真复习，大家说这是亡羊补牢。
Answer
It fits. There was a loss first (failing), then a repair (studying hard). 亡羊补牢 describes fixing a problem after the loss.
4. Replace the idiom
他每天坚持锻炼，终于瘦了下来，这就是守株待兔。Is the idiom right? If not, suggest a fix.
Answer
Not right. 守株待兔 means waiting for luck without effort, and the student worked daily. A plain sentence such as 他每天坚持锻炼，终于瘦了下来 is better, or use an idiom about perseverance such as 持之以恒.
5. Split the run-on
我今天早上起来发现下雨了所以我没带伞就出门结果衣服都湿了。
Answer
Find three ideas: it rained, I went out without an umbrella, my clothes got wet. One version: 我今天早上起来，发现下雨了。我没带伞就出门，结果衣服都湿了。
6. Fix the connector
虽然今天很累，所以我还是完成了作业。
Answer
虽然 pairs with 但是 or 可是, not 所以. Corrected: 虽然今天很累，但是我还是完成了作业。
7. Fix the punctuation
我去超市买了, 牛奶. 面包. 鸡蛋和“水果”。
Answer
Use 顿号 for the list, Chinese marks, and no quotation marks for an ordinary noun: 我去超市买了牛奶、面包、鸡蛋和水果。
8. Edit for register
Rewrite this message to a principal: 校长，明天放假吗啦？
Answer
One good version: 校长您好，请问明天学校是否放假？谢谢您。The revision removes the spoken particle 啦, adds a polite greeting and uses a formal question form. Other wordings are fine if the tone matches.
If you got these wrong
Match each question to its lesson.
- Questions 1 and 2: distinguishing commonly confused characters.
- Questions 3 and 4: using idioms accurately in context.
- Questions 5 and 6: improving sentence clarity and cohesion.
- Questions 7 and 8: editing punctuation and register.
Record each missed type in the mistake log and paper-error review. If you would like a teacher to read your own answers, see online one-to-one Chinese tuition.