. Jack is always occupied __________ his work, which makes him have no time to stay with his family.
| A．by | B．for | C．with | D．to |
As many as five courses are provided, and you are free to choose ________ suits you best.
| A．whichever | B．whatever | C．whenever | D．wherever |
Interest is as ________ to learning as the ability to understand, even more so.
| A．similar | B．vital | C．available | D．specific |
Everything was placed exactly _______ he wanted it for the graduation ceremony.
| A．though | B．where | C．while | D．when |
The three of us ________ around Europe for about a month last summer.
| A．have travelled | B．had travelled | C．travelled | D．travel |
He got up late and hurried to his office, ________ the breakfast untouched.
| A．left | B．leaving | C．to leave | D．leave |