In those days, we had no phones, so we had to keep in touch ________ letters often.
Could you tell me _____?
Much attention must ______ these details.
There are only ______ new words in the passage, but I know _____ of them.
—I don’t like music which I can’t sing along with.—Me, ______.
— ______ useful tool the computer is!— I agree. It’s ______ interesting as well. A. What a ; / B. How a; the C. What an; / D How an;