Change into complex sentence:
He is too weak to run.

• The correct answer is: গ) He is so weak that he cannot run.

- Complex Sentence-এ একটি main clause এবং একটি subordinate clause থাকে। মূল বাক্য "He is too weak to run"-কে complex করতে:
- "too...to"-এর পরিবর্তে "so...that" ব্যবহার করা হয়েছে:
- Structure: so + adjective + that + clause
Example: He is so weak that he cannot run.

• Other options:

ক) He is very weak and cannot run. - "and" দিয়ে যুক্ত হলেও এটি compound sentence (দুইটি independent clause).

খ) He is weak so he can't run. - "so" দিয়ে যুক্ত হলেও এটি compound sentence.

ঘ) He is not strong and he cannot run. - "and" দিয়ে যুক্ত, এটি compound sentence.

Source: A Passage to the English Language, S.M. Zakir Hussain.