—It’s dangerous to swim here. Look at the sign.—Oh, I _______ notice it. Thanks for telling me.
–That clothes store is _____ on weekends. --I see. I’ll go there next Monday then.
-- Which of the two T-shirts would you like? -- ________. I don't like their styles.
Do you know _an "o" and _ "u" in the word "computer"?
What ________ it is to have a picnic in ________ weather!
-Linda, shall we go and watch Holland Dafeng Flowers next month? -_______ we have the tickets.