一Do you know why he didn’t ________ a word when he ________ to?—Because he was too nervous.
---Can you tell me whom the book ________ in April, 2012?---Sorry, I don’t know.
My cousin used to ________ online too late, but now she is used to ________ to bed early.
---How far is it from your school to Lake Taihu?---It’s about ________ drive.
Stop smoking, ________ your health will get worse soon.
________ dog is ________ useful animal and ________ honest friend as well.