.Now all of our concentrtion is on _____ it is that the global environment will return to normal.
A.which B.what C.where D.when
In order to keep their mother living with them confidently, the people ______ leave the washing-up for her after meals.
A.morally B.liberally C.deliberately D.compulsorily
----What`s the result of the basketball match?
-----You see, the rain ______ it and the second half is put off till next PE class.
A.ruined B.is ruining C.will ruin D.had ruined
I prefer a table that can be _____ when not used so that it may save a lot of space.
A.cleared up B.folded up C.fixed D.taken up
The campaign is _____ only partially successful, so we have to keep on working hard.
A.at last B.at latest C.at least D.at best
Life is just like a mirror, you smile at it, and it smiles at you, too. 请你以“Learn to Smile”为题,写一篇100词左右的文章，要点包括：
1. 学会对自己微笑；
2. 学会对别人微笑；
3. 微笑的重要性。
注意：短文必须包括所有内容要点，不要逐字翻译，可适当发挥，使短文连贯通顺。
