【简答题】Complete the following sentences with " needn't have done " or " didn't need to do ". 1. We had to stop at the frontier but we_______________(open) our cases. 2. The sun came out so we_____________(ta...
【单选题】There ______ be any difficulty about passing the road test since you have practiced a lot in the driving school . A. mustn’t B . shan't C. shouldn't D. needn't