Question

Don’t get off the bus _____ it has stopped.

Don’t get off the bus _____ it has stopped. A．after B．when C．if D．until

Answer 1

D

本题考查连词。After在……之后，when当……时，if  如果，until直到。句意：直到公共汽车停下来，你才能下车。not····until 为直到····才。故选D。