下列各句中，加点的成语使用恰当的一项是 （ ）

________ reducing pullution, man should pay more attention to conserving energy

You see, it’s my dream to buy an iphone6s(苹果6S).—Oh, you can ask your parents to buy _______ for you.

You can’t predict everything. Often things don’t__________ as you expect.

If you go to Singapore, you have to learnto speak _______ and __________.