Jack,s room always has the dusty smell of an apartment whose windows are __________ opened.
The student, _________ the first place in the piano competition, is considering _____ abroad to learn classical music.
—Could you do me a favor?—It depends on _________ it is.
He often depends on others. _________,he doesn't do things by himself.
_________ I can see, there is only one way to pass the driving test.
It's already 10 o'clock and father is _________ to walk in at any moment.