【简答题】( ) Hu Ping helped Ling ling with her math.
【判断题】在箭线型网络图中应该有、也只能有一个起始节点和一个终止节点
【单选题】.He doesn’t want to be rude to her. He wants to avoid ______her feelings.
【单选题】单项选择。 I _______ up, but _______ nothing. [ ]
【单选题】I ______ the blackboard carefully, but I can ______ nothing. [ ]
【单选题】She was _____ to find that no one liked her performance.
【判断题】箭线型网络图应该有、也只能有一个起始节点和一个终止节点。( )
【单选题】I'd _____ your baby when you are away at work.