(单选题)22: In discussing environmental pollution we ought to keep ____ the point of concern. A: to B: at C: on D: off ...

(单选题)24: I got a little ________ when I learned that the appointment with the general manager was changed to another time. A: concerned B: distracted C: upset D: awful ...

(单选题)18: When spring comes in that part of the world, the trees just burst ____ life. A: in B: into C: to D: toward ...

(单选题)6: I’ve just come ____ a beautiful poem in this book found in a secondhand bookshop. A: about B: across C: down D: out ...

(单选题)44: People working in the government should not ______ business affairs that might change their political judgment. A: engage in B: hope for C: choose between D: pick on ...

(单选题)8: When spring comes in that part of the world, the trees just burst ____ life. A: in B: into C: to D: toward ...

(单选题)2: Mary could not tell Jane the secret with her little brother standing ____. A: by B: up C: in D: to ...

(单选题)46: Even great ____ require continuous practice. A: music B: musical C: musicians D: museum ...

(单选题)40: Students have access ____ the library during the vacation. A: in B: by C: to D: at ...

(单选题)22: He could be ________ about everything else in the world, but not about Manet, his loving child. A: visual B: critical C: favorite D: essential ...