In front of our house ________ we used to swim.
| A．a river lies that | B．does a river lie where |
| C．lies a river which | D．lies a river where |
My cousins _______ me and ask me what I was doing when I was studying in Canada.
| A．used to ringing | B．were used to ring |
| C．were used to ringing | D．used to ring |
Larry and his wife were killed in the volcanic eruption, _______ their 5-year-old son alone in this world.
| A．leaving | B．and left | C．to leave | D．left |
Make ______ a habit to put whole-grain biscuits, nuts or raisins in your backpack.
| A．/ | B．this | C．that | D．it |
Pompeii _______ by so many tourists that some of the relics are not well protected.
| A．has been visited | B．is visited | C．is visiting | D．was visited |
Michael really has a gift ______ playing the piano so his teacher decided to make a pianist of him.
| A．on | B．about | C．into | D．for |