1 how about / what about / why not / why don’t you --- suggest (同Unit 11--9)
3 need repairing --- need to be repaired / fixed
4 in a way --- to some extend 在某种意义上
5 let sb. down --- disappoint
6 shouldn’t have done 本不该做某事
run one’s life --- manage one’s life
7 must have done 对过去的肯定推测 (同Unit 4--2)
8 sponsor – give money to help
10 drop in --- call at some place --- visit
pick sb. up --- get sb. and leave together