19. Which word is for Question 19?

(19) I'm not sure which restaurant ________. A: to be eating at B: eating at C: to eat at D: for eating at

Which flight does the man want to take（） A: The 14:00 flight. B: The 17:20 flight. C: The 19:30 flight. D: The 16:00 flight.

【填空题】19//4= ,19%4= , -19//4= , -19%4=

Directions: Questions 19 to 21 are based on the passage you have just heard.Questions 19 （ ） A: How much you can afford to pay. B: What course you are going to choose. C: Which university you are going to apply to. D: When you are going to submit your application.

‎Which day is America’s National Day or Independence Day? ‍ A: May 10, 1775 B: July 4, 1776 C: Oct 19, 1781 D: Apr 30, 1789

Which day is America’s National Day or Independence Day? A: May 10, 1775 B: July 4, 1776 C: Oct 19, 1781 D: Apr 30, 1789

某班学生年龄(单位:岁（）分布如下:18 17 19 18 19 20 18 19 19 18 19 18 19 18 17 21 18 1919 18 17 18 19 18 19 20 18 20 19 19 19 18 19 18 17 21 18 19 20 18 18 17 20 17 19 20 19 18 19 18要求:(1（）以学生年龄为分组标志编制分布数列（2）分别按向上和向下两种形式进行频数累计并列表说明。

AmongCovid-19 , 19 refers to _______. A: the year 2019 B: 19 kinds of viruses C: 19 persons D: 19 diseases

19%4的值:_______;-19%-4的值：_________;-19%4的值：_________;19%-4的值：________