Here are the correct answers for each question:

**Question 26 [212866]:** My father ___ a biologist and my mother ___ as a nurse in a big hospital.
- A. is/work
- B. was/work
- C. is/works
- D. was/worked

**Correct Answer:** C. is/works

**Question 27 [212867]:** Jazz ___ in the US and ___ now popular throughout the world.
- A. originated/is
- B. originates/is
- C. originate/was
- D. originated/was

**Correct Answer:** A. originated/is

**Question 28 [212868]:** "___ hungry?", she asked me.
- A. You are
- B. Are you
- C. Do you
- D. Did you

**Correct Answer:** B. Are you

**Question 29 [212869]:** ___ the surname 'Smith' very common in Britain?
- A. Did
- B. Do
- C. Does
- D. Is

**Correct Answer:** C. Does

**Question 30 [212870]:** Why ___ we have math again on Friday?
- A. don't
- B. doesn't
- C. aren't
- D. weren't

**Correct Answer:** A. don't