_______ necessary for us _______ English well.A.It’s; to learn B.It’s; learn C.That’s; learn
---How is the weather in Xiamen? ---Oh, it’s very hot ________ summer.
---Hi, Tina. Could you help me cut up the meat for dumplings? ---Sure, Mom. But where is the _______?
---John knows so much about the alien. --- Yes, you know he is only_______ eight-year-old boy.
Tony is of and he has .
There is a backpack _________ on the floor.