With a lot of difficult problems the manager felt worried all the time.A. settledB. to

问题补充：

With a lot of difficult problems , the manager felt worried all the time.

A. settled

B. to be settled

C. settling

D. to settle

答案：

A. settled

B. to be settled

C. settling

(答案→)D. to settle

解析： D本题考查with复合结构。经理一直忧心忡忡，是由于有很多困难要解决，因此用不定式表示要解决；又因句中解决困难的人是经理，因此要用主动形式。