TASK DEFINITION: In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D". 
PROBLEM: [header] How to clean a vornado fan [title] Clean out dust in the outer grills using a vacuum cleaner brush. [step] You can use a brush attachment on a vacuum cleaner to clean out all of the dust from the outer grills. Make sure the fan is unplugged before vacuuming. <sep> (A) [title] Place a cleaning rod in each section of the fan and squirt some cleaning fluid through each rod. [step] Avoid getting any grease in the vents or rest tray. (B) Some of the cleaner should be removed from the outside if you use a cloth and brush as cleaning instructions are laid out in the manual. [substeps] Avoid cleaning the outer grills with dust because it can detach some of the insulation and contribute to the fan's cooling. (C) Wipe down the inside of the cover every few minutes so you can put the fan back together. [substeps] For maximum efficiency, you should wash your vornado fan at least once a month, which is right after each dry run. (D) Go slowly when vacuuming to ensure you clean out as much dust as possible. [substeps] This will only clean the outer part of the fan, not the inside blades.

SOLUTION: D

PROBLEM: [header] How to be creative with landscaping [title] Construct a playground for children. [step] Do not purchase expensive sets of see-saws, slides or swings. You can actually create a playground for children with just a few easy tweaks. <sep> (A) Explain to the children that you own a playground. If you have an old playground for young children, it may be easier for them to understand. (B) You can make use of old chairs or tires and turn them into swings. You just have to make sure that you use sturdy ropes as well as tie them appropriately to a tree for safety. (C) [substeps] Most likely, you would have made the playground yourself, but if you use it, you will need to provide very clear, patient instruction. On the playground's exterior, get creative and use the distinctive textures listed above. (D) [title] Consult with your local park or garden center to see if they can create their own playground. [step] Make sure that they can match the basics of an playground.

SOLUTION: B

PROBLEM: A man is sitting on a side walk playing an accordion. A crowd has gathered around the man to watch him play. the man <sep> (A) stops playing his accordion and derek and his friend walk up to observe. (B) picks up the accordion and begins talking to the crowd. (C) twists and turns his body while playing passionately for the crowd. (D) finishes playing and nod their heads to the audience.

SOLUTION:
C