37.Help ______ to work out these physical problems,will you?

37.Help ______ to work out these physical problems,will you?
A) yourself B) myself C) you D) me
39.The news of serious drought(干旱) in southwest China made Ben feel very ______.
A) badly B) sadly C) lonely D) sorry
42._____ fun it is to go skating in such a chilly weather!
A) What B) What a C) How D) How a
44.We _____ talk or speak loudly in public places ,such as hospitals,libraries or cinemas.
A) don't B) may not C) needn't D) mustn't
45.Shanghai ___ so much that even Shanghainese need a map when they go around the city.
A) are changed B) has changed C) will change D) had changed
48.I remember Jefferson’s relatives in Yingxiu Town when I went to Sichuan last month.
A) visiting B) to visit C) visited D) have visited
52.The soya milk bad unless you put it in the fridge.
A) doesn’t go B) goes C) won’t go D) will go
70.Students mustn’t smoke because smoking is harmful to their health.(保持句意基本不变)
Students to smoke because smoking is harmful to their health.