Question

.... you know the telephone number? a) do b) does c) is d) are

Answer 1

Do you know...............

Answer 2

The correct answer to the question "Do you know the telephone number?" is "a) do."

In this sentence, the subject is "you" and the verb is "know." Since the subject is "you," the appropriate form of the verb to use is "do."

The other options, "b) does," "c) is," and "d) are," are incorrect because they do not agree with the subject "you." "Does" is the third person singular form of the verb, used with he, she, and it. "Is" is the singular form of the verb "to be," also used with he, she, and it. "Are" is the plural form of the verb, used with they and we.

Therefore, the correct answer is "a) do."