--_______ not very difficult for us young people _______ English.--So let’s study hard.
--- Mr Smith, please teach me how to draw on the computer today. ---Oh, no._______. You have to get familiar with the keyboard first.
---I think _______ask Tim for some advice. ---_______. Last time when I turned to him, he refused to help.
Which sign can you mostly see in the school library?
---You needn’t get up early, we have changed our plan. --- Really, but I _______ about it.
---Do you prefer _______ to Beijing by air? ---I would rather _______ a train.