Why was _____ you didn’t ask your head teacher for help while in trouble? [ ]

I’ll work hard to make a lot of money ______ I can buy a big house.

28. Let’s take a bus or taxi to the park — ______ you’d prefer to walk.

_ the average age of the population increases, there are more and more old people to care for.

.—My brother fell off his bike and hurt himself. — .