31.   In Pasadena, officials also have been working to develop proposals for how the Rose Bowl could be remodeled to meet the needs of teams today.

32.   Iraq, Iran and North Korea have worked to develop intercontinental missiles, experts say, and their warheads would probably tumble.

33.   It is also working to develop a vaccine against the virus.

34.   It has just signed a deal with Moscow to let China produce advanced Russian jet fighters and is working to develop a nuclear-missile-carrying submarine force.

35.   It is also working to develop a traveling exhibit program for museums nationwide.

36.   It said it will work to develop new technology and marketing strategies.

37.   It was already well known that North Korea possesses chemical weapons and that it has been working to develop missiles.

38.   Its researchers set to work developing a clear resin that could enclose anything stuck into it.

39.   It was the first public hint that India is working to develop advanced types of nuclear weapons.

40.   Lately, Russia has been working to develop commercial uses for them.