问题
选择题
Bill was doing a lot of physical exercise to build up his_______.
A．ability
B．force
C．strength
D．mind
答案
答案：C
build up one’s strength使自己强壮。
搜题请搜索小程序“爱下问搜题”
Bill was doing a lot of physical exercise to build up his_______.
A．ability
B．force
C．strength
D．mind
答案：C
build up one’s strength使自己强壮。