17.（ ）

(单选题)According to the writer, it is difficult to ______. (单选题)The underlined word “downsides” in Paragraph 2 probably mean (单选题)（ ） (单选题)How I wish every family ______ a large house with a beautifu (单选题)It is reported that some scientists in Great Britain have fo (单选题)The reason ______ he did not go the party was ______ his mot (单选题)At the top of the mountain ______. (单选题)______ hard and you will succeed in time. (单选题)—Hi, Maria, you look tired.—I am tired. I ______ on my homew (单选题)Who do you think will ______ since the president has resigne