Millions of people around the world suffer from a painful addiction to biting their nails，which can be harder________than smoking cigarettes．
| A．to be quitted | B．to quit |
| C．to have quitted | D．to quitting |
Nuclear ______ be really dangerous at times even though it’s a nice energy in general.
| A．shall | B．should | C．can | D．Must |
Students who graduate with experience will be given ________ over those who never work in any company.
| A．prediction | B．preference |
| C．presence | D．Preparation |
As a student of Senior Three, he has very little free time _________ he can spend developing his own interest.
| A．when | B．in which |
| C．at which | D．that |
I have a habit of taking a coffee, which makes me feel _____when I have to stay up late.
| A．adequate | B．pessimistic |
| C．sensitive | D．Energetic |
Women's Day is around the corner, and I'm considering buying a gift for Mum, ________ that is to her taste.
| A．one | B．which |
| C．the one | D．for which |