Question 1:

If you were there, you'd understand.

Question 2:

He can hardly understand the concept.

Question 3:

If they were aware, they would intervene.

Question 4:

She has seldom seen such a spectacle.

Question 5:

If I had known the truth, I'd have told you.

Question 6:

He rarely goes to the cinema.

Question 7:

If it were true, it'd be fantastic.

Question 8:

He can hardly understand the concept.

Question 9:

On a hill in front of them___________ a great castle.

Question 10:

Among them___________ several sacks of white flour.