(单选题)20: A: Are you sure that you have met him before? B:（ ）I’m mistaken. A: Unless B: Whether C: If D: Though ...

(单选题)46: I’m very glad to know that my boss has generously agreed to ________ my debt in return for certain services. A:   take away B:   cut out C:   write off D:   clear up ...

(单选题)16: The　room　is　in　a　terrible　mess;　it____cleaned. A: can't　have　been B: shouldn't　have　been C: mustn't　have　been D: wouldn't　have　been ...

(单选题)10: A:Remember the first time We met, Mike? B:of course I do. you _______ a lecture. A: had?given B: were?giving C: gave D: had?given ...

(单选题)4: The returns in the short ________ may be small, but over a number of years the investment will be well repaid. A:   interval B:   range C:   span D:   term ...

(单选题)48: All　the　memories　of　his　childhood　had（ ）from　his　mind　by　the　time　he　was　65. A: faded B: illustrated C: comfined D: concerned ...

(单选题)24: A: _____? B: There is No doubt about it. A: OK B: Sure C: Really D: Is?that?so ...

(单选题)18: Before　you　mail　this　letter,　you　should　check　again　whether　you　have（ ）it　or　not. A: sunk B: sighed C: sought D: sealed ...

(单选题)12: We always travel _________. The seats are more comfortable and the food is better. A: business class B: first class C: tourist class D: economic class ...

(单选题)6: You____all　those　clothes!　We　have　a　washing　machine　to　do　that　sort　of　thing. A: needn't　have　washed B: shouldn't　have　washed C: must　not　have　washed D: can　not　have　washed ...