Structure Skills 4 - 5 (Present & Past Participles)

Aerodynamics is the study of the forces _____________ on an object as it moves through the atmosphere.

• acting

• act

• are acting

• acted

_______________ for their strong fiber include flax and hemp.

• Plants are grown

• Plants grown

• Plants that grow

• To grow plants

___________________________________, methane can be used as a fuel.

• It’s produced by the fermentation of organic matter

• Produced by the fermentation of organic matter

• The production by fermentation of organic matter

• The fermentation of organic matter is produced

Elfreth’s Alley in Philadelphia is the oldest residential street in the United States, with _____________________ from 1728.

• houses are dated

• the dates of the houses

• the dating of houses

• houses dating

In 1821, the city of Indianapolis, Indiana, was laid out in a design _____________ after that of Washington, D.C.

• patterned

• was patterned

• a pattern

• that patterned

__________________ in front of a camera lens changes the color of the light that reaches the film.

• Placed a filter

• A filter is placed

• A filter placed

• When a filter placed

The Massachusetts State House, ________ in 1798, was the most distinguished building in the United States at that time.

• completing

• completed

• was completed

• to be completed

Barbara McClintock __________ for her discovery of the mobility of genetic elements.

• known

• who knows

• knowing

• is known

The solitary scientist _____________________________ by himself has, in many instances, been replaced by a cooperative scientific team.

• to make important discoveries

• important discoveries were made

• has made important discoveries

• making important discoveries

Geometry is the branch of mathematics __________________ the properties of lines, curves, shapes, and surfaces.

• that concerned with

• it is concerned with

• concerned with

• its concerns are