Question

I ____ go to bed____ my mother came back home.

A．won’t, until

B．didn’t, until

C．will, until

D．/, when

Answer 1

B

试题分析：句意：直到妈妈回来我才上床睡觉。从句用了一般过去时态，表示事情发生在过去，故主句用一般过去时，not until直到……才……。故选B。