— Have you finished the book? — No. I've read up to _________ the children discover the secret

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• When you read the book, you'd better make a mark ____ you have any questions. [ ]A. at which B.
• -The parents try to do everything for their son.-That is________they are mistaken.[ ]A whereverB.whe
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• 下图是南瓜的发育过程示意图，请据图回答：（1）雄蕊的＿＿＿＿里的花粉散出后，以一定方式传送到雌蕊的柱头上，叫做传粉。传粉是受精的前提。（2）图中的[4]是由[2]中的发育来的。（3-八年级生物
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• Put the books back ____ they belong after you have finished them.[ ]A. where B. to where C. to which
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• Don't answer me with a simple "yes" or "no". Explain ______ possible.[ ]A.
• _____ our eating ties in with our stress level is being studied and soon it will be clear.[ ]A. That
• 水稻的抽穗、扬花、结实过程是一个有性生殖的过程，因为在这一过程中，水稻（）A．开了花B．贮存了有机养料C．产生了精子和卵细胞D．精子和卵细胞结合成了受精卵-生物
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• -You see, I'm poor in maths, you are not good at English, and…-That's ________we should he
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