(单选题)15: My parents never remember my telephone number, and they always ___ look it up. A: must B: can C: should D: have to ...

(单选题)9: Creating so much confusion, Mason realized he had better make _____ what he was trying to tell the audience. A: exclusive B: explicit C: objective D: obscure ...

(单选题)3: Skeptics remain _____. A: unconvince B: unconvinced C: unconvincing ...

(单选题)17: His __ personality, rather than his good looks, made him popular with others. A: engaging B: enduring C: enlisting D: enhancing ...

(单选题)11: ___ sometimes keeps her awake all night that Tom is getting more and more quiet at home. A: That B: What C: It D: Whether ...

(单选题)19: Studies have shown ____teenagers often suffer form depression. A: that B: which C: in that D: in which ...

(单选题)13: Physics is _____ to the science which was called natural philosophy in history. A: alike B: equivalent C: likely D: uniform ...

(单选题)7: It is difficult to distinguish between the things that charismatic figures do ___ and those that are carefully contrived for effect. A: formally B: publicly C: willfully D: spontaneously ...

(单选题)1: This is a mistake which is typical ____beginner. A: with B: for C: to D: of ...

(单选题)15: downright A: thoroughly B: wrong ...