Dogs have a very good ______ of smell and are often used to search for survivors in the earthquake.

You can see __ C , __A and __ N in the word “can” .

It seems that water from this tap ________ for some time.We’ll have to take it apart to put it right

Is there ____ European wolf in _____ zoo

36. The entrance is _____ with such heavy stones as two or three big men can’t move.