单选题 What is the _______ from Beijing to Shanghai?

单选题 I would like to make a _____ please.

单选题 He is coughing badly these days. I'm really _______ about his health.

单选题 Please got to the ______ level and find the check-in counters.

单选题 All international passengers need to go through CIQ formalities on ____ in Beijing.

单选题 Where is the city _______ office?

单选题 The market has many products with heavy ______.

单选题 Have you _____ your plan yet?