I notice Linda is often absent from school because of illness. _______ she is not so healthy as she used to be?

It is these poisonous products ______can cause the symptom of the flu, such as the headache and aching muscles.

You don’t need to make fancy foods to impress guests—it is something simple but good _____ will do.

—I’ve read another book this week.—Well, maybe _______ is not how much you read but what you read that is important.

It was not until dark ______ he found that it was the correct way to solve the problem.