(2013·湖南，26)If nothing________，the oceans will turn into fish deserts

esident of the World Bank says he has a passionfor China, ______ he remembers starting as early as his childhood

I should very much like to have gone to that party of theirs, but ＿＿＿＿＿

Just use this room for the time being, and we’ll offer you a larger one ________ it becomes available.(2010·安徽)

How kind Wang Qiang is ! He always does what he can _____others.