He lost his key. It made him ________ in the cold to wait for his wife's return.
A:to stay
B:stayed
C:stays
D:stay
55年前的4月18日,百年科学巨匠爱因斯坦溘然长逝,他给人们留下最伟大的科学成就是( )
下列判断正确的是( )