The position of the stairs or air bridge should ____ for safety before landing.
A: check
B: checks
C: be checking
D: be checked
A: check
B: checks
C: be checking
D: be checked
举一反三
- The composition needs ______ before it is handed in. A: to check B: checking C: checked D: check
- If a forced landing is necessary, set the remote switch to the position before landing. A: ARM B: ON C: OFF
- It is worth ________ the details of the contract before you sign it. A: to check B: being checked C: checking D: checked
- Chaire had her luggage an hour before her plane left. A: check B: checking C: to check D: checked
- In the event of an emergency landing, it is not standard procedure that the cabin crew will demonstrate how to adopt the brace position before the emergency landing. A: 正确 B: 错误