I don’t know if he _______here. If he comes, he _______ me.

My parents our home for a few hours when I arrived. I didn’t meet them.－You could call them if you wanted to know where they were.

Will Guo Jingming’s new book ___________ in August this year? — Sorry, I’m not sure.

Whatever you do, ________ is difficult if you put your heart into it.

Shanghai is bigger than _____ city in Japan.