Only then _________the importance of my health.
| A．did I realize | B．had I realized | C．I realized | D．I had realized |
He is a foreigner and he is not accustomed _______like that while he i8 tn China．
| A．treating | B．to be treated | C．to being treated | D．to treat |
______ their hats into the air, the fans of the winning team let out loud shouts of victory.
| A．To throw | B．Thrown |
| C．Throwing | D．Being thrown |
You can go out, _________you promise to be back before 11 o'clock.
| A．as far as | B．so far as | C．when | D．as long as |
______, we’ll go camping.
| A．weather permits | B．If weather will permit |
| C．weather permitting | D．weather permitted |