－It’s too noisy here.. －Yes. Let’s go ___________.

 He always looks _______ . Now he's looking_______ at his new drawing.

----Do you find this Maths problem__________?---Yes. I can work it out_______.

 My brother spends      time in front of the computer.

---Do you know ____________ the population of China is?---Yes, it has the __________ population in the world, about 1.3 billion.