What do you think of the program Sing My Song on CCTV–It’s a good chance to those musicians ____write their own songs.

下列各句中加点虚词的意义和用法相同的一项是（  ）

People have the belief ______ factories should produce fewer things from raw materials, ______ the supply is growing smaller and smaller.

We lost the match because they had ____ players. They had eleven and we had only nine.

_____ do you go to see a film — Sometimes.