Theprofessoraskedaquestion,andDavid________agoodanswer.
C
A 忍受、忍耐 B 保卫、支持 C 想出、提出 D 轻视、看不起
The new discovery _______ be of great service to mankind.
Whenyou're_____acrisis,itoftenhelpstotalktosomeone.
Theprofessoraskedaquestion,andDavid________agoodanswer.