---My god, it’s raining again. What a cold day! ---So it is. It’s really too cold _______ May.
The person we talked about ____ our school last week.
Before he went abroad,he spent as much time as he _____ English.
______ is it _____ has made Peter _____ he is today?
If _____ carefully, the experiment will be successful.
It would be a good idea to use a plastic bottle, ___cut off, as a container to grow young plants in.