(单选题)15: The book was written in 1946, ____ the education system has witnessed great changes. A: when B: during which C: snce then D: since when ...

(单选题)9: He grabbed me ____ and pulled me onto the bus. A: a arm B: an arm C: the arm D: by the arm ...

(单选题)3: Although this ____ sound like a simple task, great care is needed. A: must B: may C: shall D: should ...

(单选题)22: No one can be sure ____ in a million years. A: what man will look like B: what will man look like C: man will look like what D: what will look like man ...

(单选题)16: ____ much harder work, the volunteers were able to place the raging forest fire____. A: By the means of/under the control B: By means of/under control C: By means of/under a control D: By a means of/under control ...

(单选题)10: Do you think it possible for the North Pole to have ____ a few thousand years from now? A: Shanghai B: a Shanghai C: the Shanghai D: one Shanghai ...

(单选题)4: It ____ have been Tom that parked the car here, as he is the only one with a car. A: may B: can C: must D: should ...

(单选题)23: —Joe and I are going to Vermont this week. —If ____ my job, I’d come with you. A: there weren't B: it weren't for C: it weren't D: there weren't for ...

(单选题)11: This is an illness that can result in total blindness ____ left untreated. A: after B: if C: since D: unless ...

(单选题)24: The children in the kinder-garden soon took ____ to their teachers. A: quite fancy B: a quite fancy C: quite a fancy D: the quite fancy ...