The World Health Organization gave a warning to the public without any ______when the virus of H1N1 hit Mexico in April, 2009. 
| A．delay | B．effort | C．schedule | D．consideration |
We were glad to know that all the workers who _____ in the mine were saved.
| A．trapped | B．were trapping |
| C．had trapped | D．had been trapped |
Linda went to a party with a girl, _____ favorite hobby is collecting stamps.
| A．who | B．whom | C．whose | D．which |
I thought her nice and honest ____ I met her. But as time went on, I knew that she was very selfish.
| A．at first | B．at the moment |
| C．the first time | D．for the first time |
He commanded the students _____ the classroom before he returned.
| A．not leave | B．didn’t leave |
| C．wouldn’t leave | D．needn’t leave |
Do you remember those days _____ we spent along the seashore very happily?
| A．when | B．who | C．where | D．that |