Many a time, Bob failed to find a job_____ his skills can be put to use. So the situation______ he can’t change worried him deeply.
This was the first time we_____ a film in the cinema together as a family.
---What’s wrong with him? He is so sad. ---He was ____ at not being invited to the party.
____ number of students were absent from the meeting and ____ number of them is only about fifty .
As we all know, parents are concerned _____ their children’s study, because it is concerned ____ their future .
So far, he ______ in remembering 2,000 English words.