You may write in ink or pencil.
你用钢笔或铅笔写都可以。
用钢笔写，不要用铅笔。
When in exam, you must write in ink.
考试时你必须用墨水写。
Are we to write in ink or in pencil?
我们该用钢笔写还是用铅笔写？
我们经常用墨水写字。
我常用墨水写字。
Why did you write with a pencil when you know you should write in ink?
既然你知道应该用钢笔写，为什么你还用铅笔写？
Please write in pencil, not in ink.
请用铅笔写，不要用钢笔写。
You should write your homework in ink.
你应该用钢笔写作业。
You should write your homework in ink, not with a pencil.
你应该用钢笔做作业，而不能用铅笔。
Please write clearly in blue or black ink.
请用蓝黑墨水填写清楚。
It is impolite to write a letter in red ink.
用红墨水写信是不礼貌的。
Don't write your exercise in red ink.
不要用红墨水写练习。
Please write your name in ink, not in pencil.
请用墨水些，勿用铅笔写。
Can you write a letter in red ink.
不要用红墨水写信。
Please write it in ink, not in pencil.
请用钢笔写而不是用铅笔写。
用墨水写字。
你必须用墨水书写。
你必须用墨水书写。
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