Fill the missing word in the conversation below

A:  Where  (1) __________   you from?

B:  I am (2) ______  Washington D.C.

A: Where (3) ___ Washington D.C?

B: It (4) ________ in  Europe.

A: How did you get  (5) ______ your primary school?

B: I got  (6) ______ by bike.

A: How long (7) ______ it take to get to Washington D.C (8) ____ plane?

B: It (9) _______ about 20 hours.

A: How long does it (10)  _____  to get to your hometown by train?

B: About 150 hours.

_______(10)__________ ?