The train _____ arrive at 5 p.m. but it detained because of track repair work. a. had...

Question

The train _____ arrive at 5 p.m. but it detained because of track repair work. a. had to b. was able to c. was to d. must

Answer 1

The train (c. was to) arrive at 5 p.m. but it detained because of track repair work.

a. had to