Identify the bracketed words or phrases has an error or no error.
I don’t know where (A) (could he) (B) (have) (C) (gone) so early in the morning. (D) (No Error).

A A

B B

C C

D D

Solution

Correct Answer: Option A

- sentence টি তে দুটি clause রয়েছে। একটি "I don't know=main clause." অপর অংশটি sub-ordinate clause.
- where যুক্ত clause এর আগের অংশ present indefinite tense হলে, পরের অংশ present perfect tense হবে।
- present indefinite tense= sub+ am/is/are/verb এর present form + obj. 
- present perfect tense= sub+ have/has+ verb এর past participle form+ obj.

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