It was ______ who did it, but it was _______ that we are talking about.
Sarah looked atfinished painting withsatisfaction.
According to some students, ______ listening practice is still ______ must in Senior 3, because it helps promote the sense of language.
This ischallenging job I mentioned to you the other day. Have you had anyone inmind for it now?
In face of failure, it is the most important to keep up good state of mind.
Corruption is _______ problem in countries across the world, with developing countries often believed to be more serious, although there is no evidence to suggest this is _______case.