You know that pools are expensive to build, and so ______.

(单选题)—Why are you still here?—I ______ for my classmate, but he h (单选题)______ John was looking forward to retirement, he was not ac (单选题)Jack treasures the overcoat from his grandfather, even thoug (单选题)The pandemic seems to underline China’s vision ______ it is (单选题)The camera and the eye are ______ in many respects. For exam (单选题)The negotiations took a big ______ forward yesterday and a l (单选题)Which of the following is true according to the passage? (单选题)What can’t the smart scale do? (单选题)Why do people feel shameful and regretful? (单选题)What is the main feature of the scale in the future?