Human behavior is mostly a product of learning ________ the behavior of animals dependsmainly on instinct.

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 ).

________ they've got to know each other a little better, they get along just fine.

________, John has been to several foreign countries.

________ the concert had begun did we realize what a splendid show it was going to be.

Others argue that since the earth has endured a long string of ice ages in the last two millionto three million years, any warming is ________ to be temporary.

In some schools children who prefer to read books rather than ________ football become social outcasts (被抛弃者 ).

The opposition leaders ________ the government for not taking action sooner.

The TV station, in ________ to massive popular demand, decided to continue the soap opera(肥皂剧 ).

I won't ________ those children making a noise in my house!