The bad weather meant ______ the rocket launch (发射) for 48 hours .
The police set about arresting the suspect ______ they found enough evidence to prove him guilty.
Flu is a very ______ infectious disease. Fever, headaches, coughing and fatigue are some of its ______ symptoms.
After being elected ______ President of ________ United States, Barack Obama moved with his family into ________ White House.
I took it _____ that he would be glad to accept my invitation, but he didn’t at all.
The lady in red immediately became the _____ of attention when she entered the hall.