- The teacher told the students________ football on the street.
- Bob often ____ his mother with the housework on Sundays.
- Before you leave the classroom ，please __the lights.
- —Which do you like ______, tea or coffee?—A cup of tea, please.
- There are few _______in the fridge. Let ’s go and buy some peas ，carrots and cabbages.
- I usually walk to school, but ____ bus when it rains.
- 根尖结构中吸收水分的主要部位是()
- Whose eraser is this?--It's ________.
- 参天大树的根部吸收的水，能够达到树冠的顶部，主要的动力来自()
- 对于植物繁衍后代来说，花中最重要的结构是()
置顶