---Will Mr. Black be here soon?
---I’m not sure. Let’s go and see .
A. when will the train arrive B. when the train will arrive
C. when the train arrived D. the train will arrive
---Will Mr. Black be here soon?
---I’m not sure. Let’s go and see .
A. when will the train arrive B. when the train will arrive
C. when the train arrived D. the train will arrive
B