Bill is good at playing football,but when       comes to basketball,he knows nothing.

1. A.
   he
2. B.
   that
3. C.
   this
4. D.
   it

When ____ comes to saving energy, big changes start with small steps, like turning off the lights.?

 (2011年济南1月模拟)When________comes to saving energy，big changes start with small steps，like turning off the lights.

A．that                       B．this

C．it                          D．one

Bill is good at playing football,but when        comes to basketball,he knows nothing.

A.he                                   B.that                           C.this                           D.it

My father admitted that when          comes to pop music, he had little knowledge of it.

1. A.
   he
2. B.
   that
3. C.
   this
4. D.
   it