Question

I. I consult a dictionary to find out the meaning of all the difficult words
your essay. I found the vocabulary much too difficult for me.
(a) had to
(b) ought to
(c)will have to
(d) used to​

Answer 1

Answer:

had to -used in the time when you need to do something

ought to-it means that you must follow or do something which is necessary

Will have to -it is said that some task is going to be done in the future

used to -it indicates the ability of the past i.e it tells that it had been done only in the past but not now

Explanation:

hope it helps