【題目】People do not know the value of health ________ they lose it.

【題目】If we ________ together and work hard, we are sure to succeed in the end.

【題目】Get to the restaurant earlier, ________ you can't find a parking place.

【題目】We asked Ann and Sue the same question, but ________ of them could answer it correctly.

【題目】My uncle works in HUAWEI. It is one of ________ smart phone makers in the world.

【題目】— Would you mind ________ the window? It's too hot inside.

【題目】— Do you know ________ for vacation in Paris?

【題目】The school bag ________ be Lucy's, but I'm not sure about it.

【題目】— Do you know some robots are able to take care of children?

【題目】Planting more trees on the sides of the road ________ a good way to make our city more beautiful.