下面漫画《新生》给我们的启示有（ ）①创新能不断推动技术的进步②发展科技是实现经济振兴的重要途径③科学技术能挖掘出资源利用的巨大潜力④循环利用资源有利于解决我国的能源不足
—I often make mistakes _______grammar. —Why not ask your teacher _______help?
Jenny used to be afraid ________ in class, so she always ________nothing.
________conversations with others is one of the secrets to ________a successful learner.
________ careful you are, ________mistakes you’ll make.
— I haven’t got a partner _________. — Maybe you can ask John for help.
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