e Michael was walking in the dark alone, he sang to ________ his courage.

There ______ lots of sheep and pigs on my uncle’s farm now.

Scientists are warning that ________ emissions of carbon (碳排放) are cut, we could be heading for an environmental disaster

Now young people like to go to the fast-foodrestaurant,____ ,as the name says,eating doesn’t take much time.

She told herself not to let negative thoughts _________, but, whenever she slept, her past life rose before her and she could not help feeling helpless.