He cannot help _________ books whenever he visits a bookstore. (Fill in the gap)

Correct answer: buying.
Complete sentence: He cannot help buying books whenever he visits a bookstore.

• Cannot help/ Cannot but:
- কেউ কোনো কিছু না করে পারে না অর্থে Cannot help/ Cannot but ব্যবহৃত হয়।
- Cannot help এরপর gerund (verb+ ing) বসে।
- He cannot help buying books whenever he visits a bookstore.
- Cannot but এরপর verb এর base form বসে।
- I cannot but eat biriyani when I visit the market.

• যেহেতু প্রদত্ত প্রশ্নে 'cannot help' রয়েছে, তাই শূন্যস্থানে 'buying' বসবে।
- Complete sentence: He cannot help buying books whenever he visits a bookstore.
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• More examples:
- I cannot help checking my phone every five minutes.
- I cannot but check my phone every five minutes

Source:
1. A Passage to the English Language by S.M. Zakir Hussain.
2. Website English Wizard by Saleh Ahmed.