Rubbish _______ light after this kind of new machine is invented

Some people have called ________ the worstperiod ever for Pop Music.

The experts advise _______ our army _______ modern weapons.[ ]

of order B【解析】试题分析：考查词组：

er how it ____ that Chinese climberssuccessfully finished the torch relay on the Mount Qomolangma, where the air isso thin.