She is still trying to get ____ a bad cold.

• Complete sentence: She is still trying to get over a bad cold.

• Get over [phrasal verb]
- English Meaning: to recover from; overcome, surmount; to reconcile oneself to : become accustomed to.
- Bangla Meaning: (অসুস্থতা, আঘাত, বিস্ময় ইত্যাদি) কাটিয়ে ওঠা, জয় করা; দমন করা অথবা কাউকে ভুলে যাওয়া।

অন্যদিকে,
• Get on (with somebody/something) - (কারো সঙ্গে) মিলেমিশে চলতে পারা/ (কোনোকিছু নিয়ে) এগিয়ে চলা।
- She is not easy to get on with.

• Get on (something) - যানবাহনে উঠা (to go onto a bus, train, aircraft, or boat).

• Get with it - সতর্ক হওয়া (to become alert or aware: show sophisticated consciousness).
- The rest of the team is finished. You need to get with it!

Source:
1. Cambridge Dictionary.
2. Merriam-Webster Dictionary.