e came back, he found his bag over the seat.

I must 　　　your promise 　　　you won’t be late again.

I’ll take you to a shopping center nearby_____you may buy all_____you need. 

mits of a person’s intelligence, generallyspeaking, are fixed at birth, but ________he reaches these limits will dependon his environment.

Look at the elephants. Their ears _____ open fans. —–Oh, that’s right.