Choose the correct sentence which correctly conveys the meaning of the sentence given below :

We shall remain ever grateful to you.

Find out the verb from the following underlined word:

"The Roar of a lion would make all sheep shudder".

Find out the verb from the following :

Identify the compound sentence from the options below.

Choose the appropirates preposition to complete the sentence :

Please add some sugar---------- the coffee.

Find out the plural form of the word :

Phenomenon