1. Why isn’t the car working now?
-> What’s …the matter with the car now……?
2. How long is the Red river?
-> What ………is the length of the Red river……..?
3. My mother often goes to work at seven fifteen
-> At a ……quarter past seven, my mother often goes to work ………
$. How tall are you, Lan?
-> What ………is your height, Lan………?