tests by felin with the online test builder (259 tests)

221. Verb + -ing or to.(2) (41853 candidates)
222. Verb + -ing or to. (1) (20150 candidates)
223. I wish, if only (233101 candidates)
224. Question Words ( 2) (5368 candidates)
225. Question words (1) (41754 candidates)
226. Conditional (first and second) (41832 candidates)
227. Third conditional (49026 candidates)
228. Suffixes (3) (2298 candidates)
229. Suffixes (2) (2288 candidates)
230. Suffixes ( 1) (4526 candidates)
231. Modal verbs 2 (24004 candidates)
232. Past simple or continuous (18724 candidates)
233. Although / in spite of / despite (174964 candidates)
234. A/ an and the (42793 candidates)
235. Countable nouns with a/an and some (24249 candidates)
236. Question tags (4263 candidates)
237. For, since, during, yet, etc (54958 candidates)
238. Hypothetical structures (16926 candidates)
239. Préfixes (1914 candidates)
240. Is or are? (75336 candidates)