It was not until she'd arrived home ___ the appointment with the doctor

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15. It was not until she'd arrived home.....the appointment with the doctor.
A. did she remember
B. that she remembered C. could she remember
16. ...the housework, she turned on the TV to watch her favorite sitcom.
A. Finishing
B. Once finished
C. Having finished
17. That house isn't big enough for us, and......., it's too expensive.
A. furthermore
B. hence
C. yet
18. I was just walking along the street when I.....a friend of mine I hadn't seen for years.
A. bumped into
B. went by
C. met up
19. He was punished because he was.....to the school headmaster.
B. inattentive
C. unfeasible
C. lay
A. impersonal
20. We have to.....allowance
A. do
for this difficult circumstance.
B. make
D. when she could remember
D. To have finished
D. thus
D. looked into
D. disrespectful
D. act