—Where have you been these days?—I have been to Bei Daihe with a friend      . 

—I’m sorry to trouble you, Miss White.—________.

If you want to be healthy, you’d better eat _____ too often.

There is______  “u” and ______“r” in the word “umbrella”.

— We plan to go out for a picnic next weekend. Would you like to come along? — ______. It’s my favorite.