Allow them to speak in a controlled way at first: asking quiet students for instant fluency may be doomed to failure, initially. It is better to do it in stages, as in the following example. The teacher can dictate sentences which the students only have to fill in parts of before reading them out. Trust, the teacher dictates ‘One of the most beautiful things I have ever seen is …’ and the students have to complete it for themselves. They then read out sentences, e.g. ‘One of the most beautiful things I have ever seen is Mount Fuji at sunset’ etc.