Only when he failed ______ the stress he was under.
| A．he realized | B．did he realize | C．realized he | D．he did realize |
In his twenties, he took part in sports and gained a great deal of __________.
| A．ability | B．study | C．experience | D．knowledge |
If you want to _________ university, you should work hard.
| A．attend | B．join | C．take part in | D．join in |
The captain commanded that the mission ______ before dark.
| A．must be finished | B．be finished | C．ought to be finished | D．was finished |
The room is too small and it is not fit_________.
| A．to be worked in | B．to work in | C．to work | D．to be worked |
It’s her first time that she_______ by the school to participate in the contest.
| A．was chosen | B．has chosen | C．chose | D．has been chosen |