日本成人片在线_久久免费精品视频_国产午夜精品久久久久久免费视_校花撩起jk露出白色内裤国产精品_av影片免费在线观看_国产小视频在线看_最新av免费在线观看_99久久99久久精品国产片_欧美成人猛片aaaaaaa_蜜桃免费网站一区二区三区

【題目】Many students find _____ difficult _____ English well.

【題目】I think that ______ English songs is a good way to learn English.

【題目】Make a call to your parents as soon as possible, they are looking forward to________ (receive) your good news.

【題目】Light________ (pollute) in big cities makes it difficult to see the stars at night.

【題目】—I really don’t know _____ English well.

【題目】— ______ do you improve your health?

【題目】Don’t eat too much junk food, or you will ______ weight.

【題目】Tom is the________ (nine) student passing the finishing line.

【題目】Whose bag is heavier, yours or________ (I)?

【題目】_____ you work at English, _______ you will be.