Ex3: 40 -> 60

When his wife gave birth to a baby boy, Mr. Nam became the sole __________.

• housemaid

• housekeeper

• father

• breadwinner

Living in "__________ families," which are households with three or more generations, offers both advantages and disadvantages.

• single-parent

• extended

• nuclear

• crowded

This sign warns that you _________ drive more than 50km/hour.

• shouldn't

• mustn't

• don't have to

• ought not to

You look tired. I think you _________ take a rest a few hours instead of going on learning.

• should

• ought

• must

• ought not to

After breaking up, Ms. Hana always maintains a nice __________ with my brother.

• contribution

• hospitality

• enmity

• relationship

Buying a house in the city often places a large financial ________on my parents.

• time

• burden

• labor

• family

 I believe that my brother __________do exercise more because he is over seventy-five kilos now.

• must

• ought to

• ought not to

• have to

Make sure the ………. for your glasses or contact lens is up-to-date and adequate for computer use.

• medicine

• prescription

• size

• introduction

We ________ in Japan once a long time ago and _________ back since.

• were / have not been

• had been / were not

• would be / had not been

• have been / will not be

The police ___________ me on my way home last night.

• was stopped

• stopped

• stops

• stopping