New technologies have made ________ possible to turn out new products faster and at a lower cost. [ ]

Nobody cleans this street. This street is very ______.

Do you know something about Kwanzaa? — It is _____festival celebrating the culture and history of African Americans.

I like your new leather boots! —Thanks．I had to try on almost a dozen pairs ______ I decided to get them

ly, students will be given a certificate______completion of the course