Which letter-cluster from the options will replace the question mark (?) to complete the given series?

ASDF, BUGJ, CWJN, ?

Select the most appropriate option to fill in the blank.

She ______  why I had not sent her an invitation.

(a) It was amazing to see ,how Alisha could _________ her composure.

(b) It will cost a hefty amount to __________ as good an employee as him.

Neither _____ these actions ______ a problem.

The team held on by the skin of their teeth to win the crucial match. 

Choose the most appropriate option to fill in the blank in sentence given below.

A sentence has been given with a blank to be filled with an appropriate word. Choose the correct alternative.

Fill in the blanks with appropriate prepositions from among the choices given below them:

Choose the option that best fits into the blanks in the given sentence:

On Saturday, I ______ to an Internet Cafe _______ my emails.

Just as I began to get _________ about the surroundings, she applied the brakes.