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

221. Verb + -ing or to.(2) (41932 candidates)
222. Verb + -ing or to. (1) (20187 candidates)
223. I wish, if only (233742 candidates)
224. Question Words ( 2) (5382 candidates)
225. Question words (1) (41945 candidates)
226. Conditional (first and second) (41972 candidates)
227. Third conditional (49256 candidates)
228. Suffixes (3) (2298 candidates)
229. Suffixes (2) (2288 candidates)
230. Suffixes ( 1) (4532 candidates)
231. Modal verbs 2 (24133 candidates)
232. Past simple or continuous (18761 candidates)
233. Although / in spite of / despite (175286 candidates)
234. A/ an and the (42837 candidates)
235. Countable nouns with a/an and some (24311 candidates)
236. Question tags (4267 candidates)
237. For, since, during, yet, etc (55161 candidates)
238. Hypothetical structures (16938 candidates)
239. Préfixes (1917 candidates)
240. Is or are? (75483 candidates)