网址：http://m.1010jiajiao.com/timu3_id_2984263[举报]
----Jack promised to come on time, but he hasn't arrived．
----What do you imagine ____ to him then?
A．happening B．had happened C．has happened D．happened
－Jack promised to come on time．
－What do you imagine ________ to him then?
A．happening
B．was happening
C．has happened
D．happened