tests by here4u with the online test builder (650 tests)

301. Phrasal verbs: let's start (1333 candidates)
302. Vocabulary: congratulating (8654 candidates)
303. Vocabulary: Customer Service (10049 candidates)
304. SMS language: abbreviations and acronyms (10695 candidates)
305. Vocabulary: renting a car abroad (11866 candidates)
306. If clauses: step 2 (24260 candidates)
307. If clauses - Beginners (11688 candidates)
308. Whereas or While (24810 candidates)
309. Vocabulary: asking, giving or refusing permission. (11312 candidates)
310. Vocabulary: clarifying a dialogue. (12739 candidates)
311. Vocabulary: appointments: how to make, postpone, cancel them (12867 candidates)
312. Concession: Despite or Although (13417 candidates)
313. Problem - Issue - Trouble (2193 candidates)
314. Vocabulary: planning a trip (16129 candidates)
315. What... like or How (4010 candidates)
316. Prepositions of location (15082 candidates)
317. For or since and their tenses (3898 candidates)
318. To do - To make (3813 candidates)
319. Vocabulary: at a hotel (15727 candidates)
320. The different pasts, again! (3275 candidates)