Dear instructors, I would like to ask about the use of prepositional phrase in the correct sentence. Although she had been known as an effective legislator first in the Texas Senate and later in the United States House of Representatives , Barbara Jordan .... The bolded phrase is meant to modify the...

Thirteen states from all regions of the country announced a plan to impose new controls on pollution from truck and bus engines by jointly adopting emission limits that would be far stricter than the federal rules. Dear instructors, I made a mistake when solving this problem. I stripped the sentence...

Dear Ron, I would like to ask about the Verb-ING modifier in the clause: "There are several ways to build solid walls using just mud or clay , ..." What is being modified by "using just mud or clay" ? It seems to me that "using just mud or clay" modifies "to build&...