A. affected
B. to affect
C. affecting
D. being affected
10. It was not until she had arrived home _______ remembered her appointment with the doctor.
A. when she
B. that she
C. and she
D. she
11. He must have waited here for an hour, _______ ?
A. didn’t he
B. mustn’t he
C. hasn’t he
D. must he
12. We’ll have to go without him _______ he comes before our flight departs.
A. if
B. providing
C. unless
D. on condition that
