The book was written in 1946, __________ the education system has witnessed great charges.
| A．when | B．during which | C．since then | D．since when |
---Will Tony come to the party tonight?
---I’m not sure. He _______stay at home preparing for the coming exam.
| A．must | B．might | C．can | D．need |
The house I grew up _______ has been pulled down and replaced by a hospital.
| A．in it | B．in | C．in that | D．in which |
______ the project in time, the staff have been working at weekends since last summer.
| A．Completing | B．Having completed | C．To have completed | D．To complete |
---Why do you keep looking back?
---I have a feeling that we _______.
| A．were followed | B．have been followed | C．are being followed | D．are following |
Tom is determined to go on _______ voyage across the Atlantic Ocean again although he is still in ______ bad condition.
| A．the; the | B．a; the | C．the; a | D．a; / |