Directions: Fill in the simple past tense and past participle of each verb. Present Simple Past Past Participle write [answer1] [answer6] do [answer2] [answer7] give [answer3] [answer8] think [answer4] [answer9] hear [answer5] [answer10]

Directions: Choose the correct answer from the drop-down menu to complete the sentence.  I haven’t used my bicycle [answer1] weeks. Yesterday, it rained [answer2] eight hours.   

Phil has undescended testes. This will reduce his fertility because

Which of the following triggers the immune system to produce specific antibodies?

Which is NOT a major function of the kidney?

The hallmark of respiratory acidosis is abnormally low PCO2.

Which of the following oppose filtration?

If blood carbon dioxide levels are high, the primary respiratory center will ____ the rate and depth of respiration in order to compensate.

Which of these transfusions would be least likely to cause a transfusion reaction?

Which of the following solutes would you NOT expect to see in normal urine?