We should check the bill again before we pay for it.
举一反三
- The tour guide has to______ before the guests leave. A: check in B: sign the bill C: check the bill D: pay for the bill
- 在编写程序代码前，应该先做设计。Before we code a program, we should design it.
- 在编写程序代码前，应该先做设计。Before we code a program, we should design it.
- 在编写程序代码前，应该先做设计。Before we code a program, we should design it.
- 在编写程序代码前，应该先做设计。Before we code a program, we should design it. A: 正确 B: 错误