In the exercise 2, page 13, I think some of the answers the lecturer gave.
I noticed the second point of the exercise which says:
2. Jake has made a lot of progress ________________ French this year because he attended every class.
the lecturer said the answer should be 'with' but i think it should be 'in' because in the expressions above the questions there is one says: make [a lot of/a little] progress in
and I think this is the correct answer. While the prepositon 'with' used with the expression: have success with.

Also, the point 3 of the same exercise it says:
3. If you want to succeed ______________ speaking a foreign language, you must practice, practice, practice!

the lecturer used 'in' while i think it should be 'at' because in the expressions there is one says: succeed at



So, what do you think?