Websites recommanded for learning English grammar

Business English Grammar Exercises(Great resource for business english and TOEIC preparation. I've done the " Business English Vocabulary Lessons ".)

What word goes best with these verbs?
1. booka) a factoryb) a dealc) a room (correct)d) a business

2. set upa) a roomb) a customerc) a bookd) a meeting (correct)

3. makea) competitionb) a bookc) a roomd) a deal (correct)

4. opena) a marketb) a competitorc) a managerd) a new branch (correct)

5. break intoa) a market (correct)b) a competitionc) a deald) a TV show

6. facea) a roomb) competition (correct)c) a factoryd) love