ally speaking, clothing made ofman-made is less superior than_____made of natural fibers like cotton wool orsilk

It’s difficult to calculateits price would be if the museum wanted to sell the ancient vase.

May I trouble you with the question?-Sorry, but it is______my knowledge

Eric isn’t good at English and he finds difficult to understand his English teacher in class.

Scientists have come to the conclusion_______ the temperature on Earth is getting higher and higher