----- How about the book you are reading now?
----- Excellent indeed. You can find many problems we have come across _____ in it.
A. covered B. covering C. are referred D. referred
——Will you come to my office when you your work? ——Sure.
A．finished B．are finishing C．have finished D．will finish
Some of the exercises appear to be ones that you have done, but after taking second look, you will find that they are different.
A．不填; the B．the; the C．the; a D．the; 不填
---I’m going to Beijing next week. Do you have anything ______to your son?
---No，thanks.
A. taken B. to take C. to be taken D. take
Through the reform, the economic situation of China ______ much better than it used to be.
A. turned into B. turned off C. turned to D. turned out
Frank studied _____English language in London for four years, so he gets ____ good knowledge of London.
A. a; the B. / ; / C. / ; a D. the; a
