Read the sentence and fill in the blank.

……… some employers oppose the very existence of unions, many theorists stress the necessity of unions.

Even though the former boss has always been rude with me, I do not hold any more___________ against him.

Farhana speaks English fluently; -----, she knows French.

It is now_______________ expensive to repair the damage which has been done.

Although the telescope_____________ into space in 1990, its inception was almost a half-century earlier.