Please remember to _________the electricity and water before you leave the laboratory.( )
A.take offB.shut offC.go offD.put off
- Why didn't you go on a trip with your family? - Well, I wanted to, but then I gave up that_______.
—Mum, I’ve heard that we can’t eat ____ these days. Is it true? —Take it easy. It is safe to eat cooked meat.
—How many _______do you have?
Here are many_______ and________.
This blue pen is .