At E2, there are always students asking ‘how can I improve my grammar?’ or ‘How do I extend my ideas on a speaking test?’ Well, I’ve got one word that can do just that. It’s a common word that I’m sure you all know, but it’s very versatile and underused. That word is ‘which’. And today, I’m going to show YOU how to use it well to help you express your ideas clearly. And if you ever want a bit more practice before your English test, make sure you head to www.e2testprep.com and sign up for our free online English test prep courses for IELTS, PTE, OET, TOEFL, TOEIC and CELPIP.