He ____to go to Beijing today, but he postponed the trip when he heard that there would be a downpour at noon.

It is a paradox（自相矛盾） that ina rich country there should bemany poor people.

I don’t know when Kitty ___________ tomorrow,and please give this message to her when she _________________.

The girl enjoys __________ the radio very much.

Don’t put your hand out of the car window,______ you will be hurt by the passing traffic.