Cho điểm A nằm ngoài ( O;K), kẻ 2 tiếp tuyến AB,AC đến ( O) . ( B,C là tiếp điểm) a)Chứng minh AO vuông BC b) Kẻ đường kính BD của đường tròn. Chứng minh CD//AO c) Chứng minh OB=3cm, OA=5cm. Tính diện tích tam giác BCD

Choose the best answer.

I think you should buy _____  pack of mineral water instead. And you can also buy _____  snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ______  cookies and soft candies.

Choose the best answer.

We should decorate our living room with _____ orange banner. We also need ________  ribbons, balloons, party hats and costume.

Choose the best answer.

I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.