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21, back up
1) 累积
The subway is running behind schedule, and traffic is backed up for blocks. I don’t know if we’ll make the 6:30 show.
2) 支持
I’ll back it up.
22, be bound for 到……地方
The bus is bound for New England.
23, be (feel) myself 找到自我
I’m feeling myself again.
24, be burned up 生气
25, be hard up for
I’m hard up for clothes, but I have a lot of books.
26, be head and shoulders above 好许多
In calculus, Joe is head and shoulders above his classmates.
