The professor worked for 7 hours at a ________.
A
此题考查的是固定词组搭配。atastretch一口气地。
Theprofessorworkedfor7hoursata________.
英语翻译：我希望我的书将阐明我们面临的复杂问题。
YouarethemostdirectyoungwomanIhaveever_______.
Sincewehaveafocusedsubject，weshouldnottalk________.
AlthoughTomissatisfiedwithhisacademicachievement，hewonders_______willhappentohisfamilylife.