The taxi ________ I usually took to my office was destroyed in a traffic accident?
| A．in which | B．by which | C．which | D．with which |
If you feel tired and sick of fat foods, that is _______ you have to go to the hospital for a medical examination.
| A．why | B．what | C．when | D．whether |
Our class _________ all fond of singing English songs and we can sing ________ than others.
| A．is; many more | B．are; many more | C．is; much more | D．are; much more |
To our excitement, two _________ of students __________ a success after three years’ hard work.
| A．scores; scored | B．score; lost | C．scores; made | D．score; scored |
He has recently ___________ tennis to relax himself.
| A．taken off | B．taken up | C．put up | D．put out |
— I phoned you yesterday morning. A girl answered, but I didn’t recognize the voice.
— Oh, it __________ my younger sister. She was in my room at that moment.
| A．must have been | B．should have been | C．could have been | D．may have been |