We can’t take part in the competition ________ we get our student card.
| A．before | B．if | C．While | D．as |
— I worked till 4:00 a.m. to prepare a report for my boss.
—________ you look very tired.
| A．No doubt | B．No hurry |
| C．No wonder | D．No need |
Ifpossible,youshouldexaminealldatafields______.
| A．severe | B．available |
| C．cautious | D．previous |
—The lights were left on all night long.
—Oh. It seems that Tom is ____. Only he stayed in the classroom when I left yesterday evening.
| A．blaming | B．blamed |
| C．to be blamed | D．to blame |
The ________, I think, he drew from his simple experiment is not scientific.
| A．conclusion | B．charge |
| C．promise | D．relation |
They fell in love with each other _______ they met in Paris.
| A．for the first time | B．the first time |
| C．every time | D．next time |