— did you buy for your mom for Mother’s Day?
— Some flowers.
| A．How | B．Where | C．When | D．What |
Luckily, all the students got out of the teaching building _ it fell down.
| A．until | B．before |
| C．since | D．While |
—How are you going to the train station to meet your aunt?
—I'm going there ______ my car.
| A．by | B．in | C．to | D．On |
By _______ way, is _______ man in _______ red your brother?
| A．the, a, the | B．the, the, the |
| C．/, the, / | D．the, the, / |
I don't know when ______.
| A．will the train leave | B．the train will leave |
| C．would the train leave | D．the train leave |
_____ he _____I am a doctor.
| A．Both; and | B．Either; nor |
| C．Neither; nor | D．Neither; and |