If you had lived in the Middle Ages,you ________the chance to appreciate the art works of Leonardo da Vinci.
Unfortunately, when I dropped in, Dr. Green ______, so we only had time for a few words.
The animal makes a strange sound, slightly ______ the bark of a dog.
You got back so late and you didn’t even give me a proper reason _______ you hadn’t called me! I’m very unhappy with you.
There was a big dog ______ in front of Mr. Hill’s house, so David didn’t dare to go near it.
The tourists can not help wondering ______ the ancient people could manage to complete the magnificent building without modern equipment.