Chọn đáp án đúng và giải thích

17. While everybody else in our class prefers working in groups, Mina likes working______.

A. on herself               B. on her own             C. of her own                          D. in herself

18. Marie Curie, ______,was awarded a Nobel Prize for her work.

A. was the scientist who discovered radium                         B. whose scientific discovery of radium

C. the scientist discovered radium                            D. the scientist who discovered radium

19. Lora has just bought a new skirt that she likes very much. Choose the most suitable response to fill in the blank in the following exchange.

-Jane: “You look great in that red skirt, Lora!”

-Lora: “        __”

A. No, I don’t think so.                                                                       B. Oh, you don’t like it, do you?

C. Thanks, I bought it at Macy’s.                                          D. Thanks, my mum bought it.

20. This is______the most difficult job I have ever tackled.

A. by rights                 B. by all means                        C. by far                                              D. by the way