(单选题)21: An expert is_____who has special knowledge, skill or training. A: that B: one C: which D: such ...

(单选题)9: How many more exercise-books do you have ___? A: to correct B: to be corrected C: for correcting D: corrected ...

(单选题)3: The nurse took a(n)___ of my blood for tests. A: sort B: type C: example D: sample ...

(单选题)22: ___ his wealth, he is not happy. A: Except for B: In spite of C: Because of D: Besides ...

(单选题)16: Washington D.C was named _______ the first President of the U.S.A.,George Washington. A: from B: after C: by D: with ...

(单选题)23: There was a big hole in the road which ___ the traffic. A: set back B: stood back C: held up D: kept down ...

(单选题)17: It was several minutes before I became _____ was happening in the classroom． A: aware of B: aware that C: aware of that D: aware of what ...

(单选题)11: What are you ___ if she asks you to stay? A: doing B: to do C: to be done D: to be doing ...

(单选题)24: When you have finished the experiment, you can include your ___ in a report.(find) A: finding B: findings ...

(单选题)18: She tried to _____the conversation away from such a dangerous topic. A: drive B: steer C: steal D: stay ...