Choose the correct option:
 When we begin a letter with 'Dear Sir' or 'Dear Madam' or 'Dear Sir/Madam', we end it with____

Choose the correct transformation from assertive to exclamatory:
I wish I knew more people.

Choose the appropriate article given in the options:
 Copper is _______ useful metal.

Choose the correct option changing the following sentence intoas sertive:
 How childish your talks are!

Choose the correct option changing the following sentence into Assertive:
Shall we ever forget our freedom fighters?

Choosing the correct option, change the following sentence into Assertive without changing the meaning:
Shyam has promised never to touch hard drink again.

Choose the appropriate article given in the options:
 Neil Armstong was ______ fast man to walk on the moon.

Which one of the following is the correct meaning of -
 That which cannot be heard.