---Do you know ____________ the population of China is?---Yes, it has the __________ population in the world, about 1.3 billion.
---How often does she have dancing classes? ---_________. A.On Saturday afternoon B.At 9 o’clock C.Once a week
Linda thought it was______ enjoyable tour and wanted to keep____ diary about it. A.a; an B.a; / C.an; a
— Why don’t we go climbing tomorrow? — ___________
—Could you tell me _______________________? —It will start at 4:00p.m.
—You’d better keep the secret to ______, Millie and Lily. —OK, Amy.You should keep it for ______,too?