What is the distance between Ho Chi Minh City and Can Tho City

`37`. How far is it from Ho Chi Minh City to Can Tho City?

→ How far is it from + địa điểm `1` + to + địa điểm `2`?

`38`. She was sick. However, she still stayed up late to do homework.

→S + (be) + adj. However, S + V

`39`. Though the watch had a high price, Mary still bought it.

→ Though + clause

`40`. You shouldn't talk to the driver when he is driving.

→ S1 + should(not) + V + when + S2 + (be) + V_ing

`41`. Did they arrive last night?

→ (Wh) + Did + S + V_inf?