. However hard I tried to explain it to her, she just couldn’t understand. I found her impossible to .

Once made out, the plan must be carried out ______ any difficulty

_______ do you watch TV —Only once on Saturday evening. You know as astudent I am too busy.

30 — Whyyoube talking so loudly while others are studying– I am terribly sorry

64. The price of the portable computers(手提电脑) is still sothat I can’t afford to buy one.