His ability is beyond question; ______ has been in doubt is ______ he is prepared to work hard.
—Why do you look so worried?—My computer broke down and my essay ______ unfinished since.
Nowadays teachers tend to be more dependent on ________ is thought to be a great teaching aid—the computer.
________ from Milan Trenc’s novel, the film Night at the Museum brings to life a worldwhere dinosaurs wander the earth.
The patient will have to remain in hospital for another week ____ the recent medical report.
Studying alone, you are free to choose what to learn and when, ________ you don’t need others’ agreement.