The sandstorm ________for several days，which left a terrible sight across the west.
A．kept off B．kept away
C．kept back D．kept up
The sandstorm ________for several days，which left a terrible sight across the west.
A．kept off B．kept away
C．kept back D．kept up
D 四个keep构成的动词短语的主要含义：keep off(使)让开，(使)不接近；keep away(使)远离，不靠近；keep back阻止，抑制，隐瞒，保留；keep up保持，维持，继续。语境说这次的沙尘暴持续了好多天，因此用keep up表示“维持，继续”。