This worksheet consists of 3 different exercise to revise 1st, 2nd and 3rd type conditional clauses. In 1 the students have to put the verbs in the correct form according to the type of conditional (a number is given to help them). In 2 they put the words in the correct order and in 3 they have to match both parts of conditional clauses. Key included. Thanks Phillip Martin for clipart. Hope it's useful!