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

221. Verb + -ing or to.(2) (41936 candidates)
222. Verb + -ing or to. (1) (20190 candidates)
223. I wish, if only (233772 candidates)
224. Question Words ( 2) (5382 candidates)
225. Question words (1) (41963 candidates)
226. Conditional (first and second) (41975 candidates)
227. Third conditional (49279 candidates)
228. Suffixes (3) (2300 candidates)
229. Suffixes (2) (2289 candidates)
230. Suffixes ( 1) (4533 candidates)
231. Modal verbs 2 (24149 candidates)
232. Past simple or continuous (18764 candidates)
233. Although / in spite of / despite (175322 candidates)
234. A/ an and the (42840 candidates)
235. Countable nouns with a/an and some (24316 candidates)
236. Question tags (4269 candidates)
237. For, since, during, yet, etc (55169 candidates)
238. Hypothetical structures (16940 candidates)
239. Préfixes (1917 candidates)
240. Is or are? (75488 candidates)