Why, my new computer is rubbish! Five hours has passed and it still hasn’t finished the downloading.—Don’t worry. You know, sometimes the Internet ________ be very slow.[ ]

Have you noticed the problem ________ he is now in low spirits？________ come?

Many people enjoy ________ in the park.

下列各项中，句式完全相同的一组是

Why do you get up so early in the morning, Tracy—I generally make it a tobe up by 7 to read English.