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

221. Verb + -ing or to.(2) (41831 candidates)
222. Verb + -ing or to. (1) (20143 candidates)
223. I wish, if only (233019 candidates)
224. Question Words ( 2) (5361 candidates)
225. Question words (1) (41736 candidates)
226. Conditional (first and second) (41763 candidates)
227. Third conditional (48975 candidates)
228. Suffixes (3) (2298 candidates)
229. Suffixes (2) (2288 candidates)
230. Suffixes ( 1) (4526 candidates)
231. Modal verbs 2 (23985 candidates)
232. Past simple or continuous (18712 candidates)
233. Although / in spite of / despite (174848 candidates)
234. A/ an and the (42784 candidates)
235. Countable nouns with a/an and some (24236 candidates)
236. Question tags (4261 candidates)
237. For, since, during, yet, etc (54803 candidates)
238. Hypothetical structures (16915 candidates)
239. Préfixes (1908 candidates)
240. Is or are? (75310 candidates)