Theothertimingsystembelongsinourinternalclocks，which，left________，wouldtiethebodytoa25-hourrhythm.
A、behindB
譯文：更不用說，另一個定時系統在我們的人體時鐘內，它會使人保持在一個 25 小時的生理節奏上。此題考查關于 leave 的短語。 leave behind意為“留下， 放棄”，leave alone 意為“更不用說” 。 leave out 意為“遺漏，忽視”。
―________finedayitistoday!
The old couple have been married for 40 years and never once _______ with each other.
Theoldcouplehavebeenmarriedfor40yearsandneveronce_______witheachother.
This is an important problem _______ too few social scientists have researched.
Itisnotdecided________theconferencewillbeheld.
