Did Jack come back early last night?——Yes. It was not yet eight o’clock____ he arrived home.

Cattle _____well in the country market at present, according to the evening news.[ ]

37________________certain that hisinvention will lead to the development of production

___ he could speak again, I left the classroom

This educational CD-ROM makes _____ easier for you to learn English. After using it for a month, you’ll have no difficulty ________ with foreigners.