---Why are you so crazy about music?
--- Because I can always find in music _____ peace that is missing in _____ world full of challenges.
| A．the; a | B．the;/ | C．/; a | D．/; the |
Only when class began _____ that he had left his book at home.
| A．will he realize | B．he did realize | C．did he realize | D．should he realize |
Nothing can stop a _____ student _____ his mind to give up his studies.
| A．promised; to change | B．promised; changing |
| C．promising; changing | D．promising; to change |
—Are you _____ with the achievements you have made recently?
—Of course， they show my efforts at least.
| A．similar | B．satisfied | C．curious | D．pleasant |
_____ we move the picture over there? Do you think it’ll look better?
| A．What if | B．What about | C．As long as | D．Until |
_________ that he had fallen behind, he tried to work harder.
| A．Realize | B．Realized | C．To realize | D．Having realized |