I have no pen that I can lend you? (Simple)
Having no pen, I can lend you.
Without any pen, I can lend you.
I have no pen to lend you.
Correct
I have not enough pen to lend
Explanation:
Correct Answer is: I have no pen to lend you.
– উল্লেখিত প্রশ্ন I have no pen that I can lend you? হচ্ছে complex sentence.
Complex: I have no pen that I can lend you?
Simple: I have no pen to lend you.
অর্থাৎ that এর পরিবর্তে to বসে এবং simple করার ক্ষেত্রে একটি clause পরিণত হয়।