Theprofessorworkedfor7hoursata________.
A
此题考查的是固定词组搭配。 at a stretch 一口气地
Thegovernmentfinally________allthedocumentsrelatingtothewar.
Ayearlater,withthenation’seconomy________,Bush’sapprovalratingdroppedbelow40percent
Fishis________andexpensiveatthistimeoftheyearinthisarea.