The ________ problems have effects on our life.
He went there as a volunteer on a ________ program.
---Mum, I’m leaving for Beijing tomorrow morning.--- Oh, good. But be sure to phone me _______ you get to Beijing, please.
There is going to _______ a basketball match on the playground this afternoon.
I fell in 1ove____the beautiful city of Shanghai while I was on vacation there.
He found it difficult _____ others with EnglishA help B helping C helped D to help