________ the roof leaks, you have a serious problem.
举一反三
- ________ the roof leaks, you have a serious problem. A: As a result of B: Therefore C: Whenever D: Unless
- _____you may have, you should gather your courage to face the challenge. A. However a serious problem B. What a serious problem C. However serious a problem D. What serious a problem
- 如果你当时意识到问题的严重性，并采取措施，结果就完全两样了。 A: Have you realized how serious the problem was then and taken some measures, the result is completely different. B: Have you realized how serious the problem was then and taken some measure, the result will have been completely different. C: Had you realized how serious the problem was then and taken some measures, the result would have been completely different.
- Contact me at once _______ any problem. A: you should have B: have you C: should you have D: you have
- —I don't have any change with me. Will you pay the fare for me —(). A: Never mind B: No problem C: That's fine D: Nothing serious