I want to be very careful to talk only about ____ we’ve formally tested.

Your suggestion is very good ____ theory, but___ practice it will not work.

If the service is awful, a customer has the right to _____ to the manager.

It’s the test system rather than the teachers________to blame for the students’ heavy burden nowadays.

What can I do for you?— This dress is too small. Is it _____________ in a larger size?