The plane ＿＿＿＿＿ at 7：00 p.m., so I have to be at the airport by 6：40 at the latest.
| A．has left | B．is to leave | C．will have left | D．leaves |
It worried her a bit _________ her hair was turning grey.
| A．while | B．that | C．if | D．For |
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 |