پرسش‌ها با تگ (تست گرامر)

Agronomists work to improve the quality of crops, increase the yield of fields, and ……… of the soil.

……… and held prisoner for three day, the man was finally rescued by the police.  

The problem facing most tourists is ……… among so many possibilities. 

Manufacturing is Canada’s most important economic activity, ………….. 17 percent of the workforce.

 Glaciers begin to form ………….. more snow falls during the winter than melts and evaporates in the summer.  

 ………….. is rooted in experiments in iron and steel conducted in the nineteenth century.

During the course of its growth, a frog undergoes a true metamorphosis ……… with  a fishlike larval stage.  

—— Jane has an excellent resume, she hasn't found a job yet.

……… their differences, the three models resemble ……… in a crucial respect. 

The author Mark Twain worked as a newspaper reporter in Nevada and California before moving to Hartford, Connecticut, ………….. he wrote most of his books.