She studied hard ______ she could pass the challenging exam.

♦ In order that/ So that / that / so = যাতে
• He works hard so that/ in order that/ that/ so he can pass.

Options,
• If, in case, provided, provided that, providing that = যদি,
- Unless = যদি না।

• সুতরাং, অর্থ বিবেচনা করে দেখা যাচ্ছে শূন্যস্থানে in order that  বসলে বাক্যের অর্থ পূর্ণতা পাবে।
Complete sentence: She studied hard in order that she could pass the challenging exam.