The teacher took the( )to learn the students’ names on the first day of school.
A.正确答案Bdifficulty
B.trouble
C.problem
D.hardship
The teacher took the( )to learn the students’ names on the first day of school.
The teacher took the( )to learn the students’ names on the first day of school.
A.正确答案Bdifficulty
B.trouble
C.problem
D.hardship