几道语法题

greenthumbUID: 2167540

1. The glass tube in a fluorescent lamp contains mercury vapor under small pressure.
2. Won its war for independence in 1783, the United  States then          struggled to establish its own economic and financial system.
3. Because of its maneuverability and ability to land and take off in small areas, the helicopter in used in wide range of services.
4. Farce is a dramatic form that derives much of its humorous from improbable characters and situations.

1-4. d a d c

5. In her time, Isadora Duncan was ________ today a liberated woman.
(A) calling what we would
(B) who would be calling
(c) what we would call
(D) She would call it

c

可以解释一下吗?谢谢~~~~~~

greenthumbUID: 2167540

自己顶一下~~

tc_zn2001UID: 187494

看不出来画线部分  我猜的
small pressure前面有a
winning
the helicopter in used in wide range of services 这句不知道  觉得is used in a wide...
humorous 改为名词
最后一题少宾语 what适合

watermelon53UID: 2159112

把线化出来