Don’t worry. English Grammar is not —– to understand.

1. so difficult
2. very difficult
3. too difficult
4. difficult enough

Answer: too difficult

Explanation: Don’t worry. English grammar is not too difficult to understand.
Too – – – to
He is too weak to walk –
(a) so difficult – complex sentence – so এর পরে that ব্যবহৃত হয়।
(b) very difficult – সঙ্গতিপূর্ণ নয়
(c) too difficult – এত কঠিন – – – – t – – – – যে
(d) difficult enough – সঙ্গতিপূর্ণ নয়।