More than 1900 people in Africa have _______ the Ebola virus now and there is still no medicine_____ Ebola.

car on sale isused car. I have driven it for two years.

－We had _______really smoggy December this year.－I can’t remember _____ winter when air was polluted so severely.

Not only I but also Jane and Mary ______tried of having one examination after another.

It’s time for class. Let’s and for our Chinese lesson.