—When did the train _____?

when will the train _____? When did the train ___ Half an hour ago When will the train ( 10.When did the train ____ the city?A.get B.reach C.arrive D "Mary,when is the next train?"he asked "why did you stop the How did the train go? When can we get there?It _____ when we get on the train.A.lo （ ）A:When _____ the train _____ B:In half an hour. When did you learn _____(play) the guitar? When did the flood in your hometown____ _____(发生)? When did the train ____the city?A、get B、reach C、arrive D、arr When did the train leave?I want to know .合并为一句.