Because it was already known that retroviruses could cause cancer in animals,It seemed only ____ to search for similar cancer causing viruses human being.

When I ____ into him on the street, he said____ abroad for business affairs that evening.

It is____ to try destroy pest completely with chemical poisons, for as each new chemical pesticide introduced,...

IT would be difficult for a woman to that work. (Identify the missing word from the given choices)

No problem can be solved violance. (Identify the missing word from the given choices)

Now a days Banking is sought profession in Bangladesh. (Identify the missing word from the given choices)

I asked razia to come to the cinema me.(Identify the missing word from the given choices)