13. You should recycle the containers ______ eating Chinese meals.
A: after
B: when
C: by
D: while
A: after
B: when
C: by
D: while
举一反三
- While you are eating, you should not try to …
- --- Tommy, you should finish your homework______ you go out to play. --- I know, mum. A: before B: after C: when D: while
- What should you do when you are invited to a formal Chinese dinner? ______ .
- When eating, you should close your mouth to chew food well before you swallow it.
- When should you write a letter of acknowledgement A: After you are employed by the company. B: Before you begin to work. C: After an interview. D: Before an interview.