After a short rest, the workers kept on ______

试题详情及答案解析

After a short rest, the workers kept on _______ till midnight.

A．work	B．working
C．to work	D．to working

答案：B

试题分析：keep on doing表示继续做某事；句意：短暂休息之后，这些工人又继续工作到深夜。结合句意，故选B
考点：考查非谓语动词。