take up where one left off
to start something again in the place that one has stopped
We will take up where we left off during the next class.
Precaution while using Contact Lenses
Keep contact lenses clean
Keep contact lenses clean at all times by using the recommended contact lens solutions as directed. Dont use sterile water or nonsterile solutions including homemade solutions, distilled water, or water from the tap, a bottle, the ocean, pool, or lake. Dont use your saliva to wet your lenses.