It’s really nice of you to spend so much time ________ me around the city.

When we practice_______ English, we shouldn’t end up _______in Chinese.

_________ the TV news, most of the northern areas in China have been troubled by the haze(雾霾) weather for a few days.

I would appreciate________, to be frank, if the goods could be delivered as soon as possible.[ ]

We have plenty of rules at my house.—_________. For example, I have to stay at home on school nights.