Humanbehaviorismostlyaproductoflearning________thebehaviorofanimalsdependsmainlyoninstinct.
A、soAfter so many days without rain, the ground quickly ________ the little rain that fell last night.
_______ the movie I would have finished my paper last Sunday.
________ the concert had begun did we realize what a splendid show it was going to be.
She got a job as an assistant stage manager at the Cambridge Arts Festival Theatre, thinkingthat it might ________ to a career as a playwright ( 剧作家 ).
The address book ________ the email addresses of your friends or groups of colleagues.