Students won't talk or say anything
One way to tackle this problem is to find the root of the problem and start from there. If the problem is cultural, that is in your culture it is unusual for students to talk out loud in class, or if students feel really shy about talking in front of other students then one way to go about breaking this cultural barrier is to create and establish your own classroom culture where speaking out loud in English is the norm. One way to do this is to distinguish your classroom from other classrooms in your school by arranging the classroom desks differently, in groups instead of lines etc. or by decorating the walls in English language and culture posters. From day one teach your students classroom language and keep on teaching it and encourage your students to ask for things and to ask questions in English. Giving positive feedback also helps to encourage and relax shy students to speak more.
Another way to get students motivated to speak more is to allocate a percentage of their final grade to speaking skills and let the students know they are being assessed continually on their speaking practice in class throughout the term.