五道英语小题,最好有解释,急!1. I believe if you want to learn English wel

五道英语小题,最好有解释,急!
1. I believe if you want to learn English well, you should have a large____
2. Could you tell me____ you have learnt physics best, Linda?
3. Some of us think____ too hard to understand what the Frenchman says in Chinese
A. that’s B. it’s C. this is
4. Mr Liu told me to do more speaking, then I can get the pronunciation r____
5. Most of us think I____ to English over the radio can be helpful