We are not going on holiday this year. _____we haven’t got the money and then there’s still a lot we need to do on the house.                                                

Not easy as the problem of pollution is____, no one should just stop trying.

With the victory at the French Open, Li Na has reached NO．4 in the world, ______ the previous Asian Record.

______ other good students, the teacher thinks, Alice is _______ student．

Rare species in the world, ______ by hundreds every year, must be jointly preserved by all countries, or humans will encounter ecological disaster in the near future.