A horrible thought _________ him when he was waiting for Tom in the airport: what if the plane from Malaysia had been hijacked（劫持）?

It is reported that Beijing and Zhangjiakou（张家口）will compete to host the 2022 Winter Olympics, which will _____ China’s social development.

Our earth is getting warmer and warmer. It is time for us to_____ the emission(排放) of CO2.

We arranged to meet at 8:00 , but she never__________.

When I was in Spain last summer, I ______ quite a lot of Spanish.

You type almost anything, however unclear, into the space provided on Google and in a second it       __________ thousands of references.

Don’t worry. I’ll         in my home for a week.

Julia is running into the church on such a windy day, with one hand raised to        her hat.

I _____ of your trying to earn some money by taking part time jobs, but please don’t neglect your studies at university.

The teacher and writer as well as some students         something when we entered the room.