单项填空
1. After being elected ______ President of ________ United States, Barack Obama moved with his family into ________ White House.
A. /; the; / B. /; the; the C. the; /; / D. /; an; the
2 Flu is a very ______ infectious disease. Fever, headaches, coughing and fatigue are some of its ______ symptoms.
A. normal; common B. usual; ordinary C. common; usual D. ordinary; normal
3 The police set about arresting the suspect ______ they found enough evidence to prove him guilty.
A. immediate B. as long as C. the moment D. as far as
4. ---Were you satisfied with the exam result?
---Not a ______. I should have done much ______.
A. little; better B. bit; worse C. little; worse D. bit; better
