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- I think I must do it; this may be the main chance. 我认为我非做不可,这可能是大好机会。
- I must do it because my conscience tells me it is necessary. 我必须做这件事，因为我的良心告诉我需要这样做。
- I must do it today. 我必须在今天做这件事。
- How tired you may be,you must do it today. 不管怎样累，你也得今天做。
- H-tired you may be, you must do it today. 不管怎样累, 你也得今天做。
- I must do it the first thing in the morning. 我早上首先就要做这件事情。
- I think I must do it; this may be my main chance. 我认为我非做不可，这可能是我的大好机会。
- If we must do it today let's go early and get it over. 如果我们今天必须做这件事的话，那就早点去做好算了。
- "Maneating tree " be really false?I must do it the whole thing comes to light! “食人树”是真是假?我必须将它弄个水落石出!
- The grass needs cutting but I can't be bothered to do it today. 草得剪一剪了，但我今天却懒得去做。
- I must do something about those broken window panes. 我必须想法修理窗上的破玻璃。
- Even though you do not like it, you must do it. 即使你不喜欢这工作，你也得做。
- You must do it; you have little option. 你必须做,你没有选择的余地。
- You must do it; you have no option. 你必须做，你没有选择的余地。
- I would as soon put it off until tomorrow as do it today. 我宁愿把这件事推到明天去做,也不愿今天做。
- I decided to systemise it really, because one of the things is to warm-up and I think as I get older and older I must do it better. 我决定将他们真正地系统化，其中一件事情就是要进行热身运动，而且我也很清楚随着我的年龄越来越大，我必须做得更好。
- No matter how late it is,I must do another experiment. 不管时间很晚，但我必须做另一个实验。
- I have no choice; I must do as he tells me. 我没有选择的余地，只能按他说的去办。
- Have you somewhat to do tomorrow, do it today. 明天如有事，今天就去做。
- I must do this package up for mailing. 我必须把这个包裹包捆好交邮。
