He（）the button before we could stop him.
举一反三
- He read my credit card number out loud in front of customers (__) I could stop him. A: before B: while C: as D: since
- 2. He read my credit card number out loud in front of customers______I could stop him.（2019.12） A: before B: while C: as D: since
- 28. He read my credit card number out loud in front of customers ________ I could stop him. A: before B: while C: as D: since
- She ______ out his name before we could stop her.
- (2019年12月）He read my credit number out loud in front of customers _______ I could stop him.