(单选题)16: Before you leave, please ___ all the windows are closed. A: sure B: make sure C: certain D: assure ...

(单选题)10: Mike’s uncle insists ___ in this hotel. A: staying not B: not to stay C: that he would not stay D: that he not stay ...

(单选题)4: ___ glad to help you. A: Each of them are B: They each are C: They are each D: Each are ...

(单选题)23: The check fluttered to the floor. Slowly the old lady stooped to _____. A: pick it up B: pick up C: pick up it D: picking it up ...

(单选题)17: The student took a course in_____math. A: element B: elementary C: eloquence D: enbassy ...

(单选题)11: ___ you are blind, you will not miss the astonishing changes taking place in Shanghai. A: Although B: If C: Since D: Unless ...

(单选题)5: The tomato juice left brown_____on the front of my jacket. A: spot B: point C: track D: trace ...

(单选题)24: If I were you,  I ___ accept the invitation. A: will B: would C: may D: should ...

(单选题)18: She left very_____when her mother forgot her birthday. A: deserted B: desperate C: deceived D: disappointed ...

(单选题)12: She is trying to _____ a few dollars each week in order to go on a journey. A: set up B: set off C: set out D: set aside ...