We have worked out a plan. But I’m not sure whether it will do in .
I will try my best to stop my son from _____ the same mistake.
–_____ did you work out the problem in such a short time? --With Mr. Li’s help.
They walked home last night because they couldn’t _____ to take a taxi.
–Why didn’t you buy any bread? --Sorry, I _____.
They all _____ Laura about building a museum here.