to build up: to increase slowly, to make stronger gradually Examples of TO BUILD UP They certainly have built up a vibrant user community in a short period of time. These deficits have been built up over the past 10 years and nobody said a peep.  

to go with: to match, to compare well in color to design; to date, toaccompany (also: to go out with) Examples of TO GO WITH It goes well with dessert, cheeses, fish and my personal favorite, Indian food. Bacon especially goes well with pumpkin, lending just a little extra richness.

to make sure: to be sure, to ascertain (also: to make certain) Examples of TO MAKE SURE We need to make sure that our files are in order. We’re going to make sure that this is the best meal you’ll have in the entire city.

to bite off: to accept as a responsibility or task Examples of TO BITE OFF One mistake that a lot of people make is biting off a lot more than they can chew. Yet one of the best pieces of advice that can be given to an investor is to start small and not bite…

all of a sudden: suddenly, without warning (also: all at once) Examples of ALL OF A SUDDEN It seems like, all of a sudden, you’re mad at me, and I can never figure out why. All of a sudden, the storm subsided and the rain stopped.  

to take off: to leave the ground (for airplanes); to leave, often in a hurry Examples of TO TAKE OFF Tens of thousands of airliners take off from airports around the world each day. We are also invited and Jacob plans to take off work for the wedding on Wednesday.