_______ with the size of the whole earth, the highest mountain does not seem high at all.
| A．Comparing | B．To compare | C．Compared | D．Having compared |
Without proper lessons, you could ________a lot of bad habits when playing the piano．
| A．break up | B．pick up | C．catch up | D．give up |
There are so many tall trees in the forest,______________.
| A．some of them measures over 50 meters | B．some of which measuring over 50 meters |
| C．some of them measuring over 50 meters | D．some of which measures over 50 meters |
--- I don’t know whether I should go abroad or not, Mum．
--- I leave_______ to your own judgment whether you should do it．
| A．that | B．it | C．this | D．what |
Many a woman______ important positions in society, which________impossible in the past．
| A．holds; was | B．hold ; were | C．held; was | D．holding; were |
My daughter asked ________second question before I could answer_______first one．
| A．the; the | B．a; a | C．a; the | D．the; a |