Ordinary soap, _________ correctly, can deal with bacteria effectively.
used
to use
using
use
—Have you finished your homework? —Not yet. Now I regret the whole afternoon surfing on the Internet.
He can’t tolerate by her again and again during the report, so they quarreled at last.
______ the instructions very carefully when filling in the form.
The school had promised to keep parents fully _____ about the conditions of their children at school.
I send you my revised catalogue and price list, ______ you may find something that suits you.