Question

question 1
read the sentence below for meaning; then choose the correct helping verb and past participle form by clicking the letter that indicates your choice.
professors smithson and knoll __________ on math anxiety at three different colleges this year.
a have speak
b have spoken
c has spoken
d have speaked

Explanation:

1. Subject - Verb Agreement: The subject "Professors Smithson and Knoll" is plural, so we need a plural helping verb. "Have" is used with plural subjects, while "has" (in option C) is for singular subjects. So we can eliminate option C.
2. Past Participle of "Speak": The verb "speak" has an irregular past participle form "spoken". The form "speak" (in option A) is the base form, and "speaked" (in option D) is an incorrect past participle form for "speak". So the correct combination of helping verb (for plural subject) and past participle is "have spoken", which is option B.

Answer:

B. have spoken