He bought a house for his children ________
B
本题属于动词不定式复合结构做后置定语。in不可省略。句意：他买了一套房子给孩子们住。
—You were brave enough to raise objections at the meeting.
— Well, now I regret ________ that.
Peopleappreciate_______withhimbecauseheisknowledgeableandhumorous.
The challenge is not one of expansion. _______, the rapid growth in enrollment over the last 40 years has come to an end.
Iwouldlove________tothepartylastnightbutIhadtoworkextrahourstofinishareport.