. The hotel turned us down because we didn’t make reservations(预约), but we ______ have.
Scientists think that there has been life on Earth for _______ years.
Don’t make any noise. The baby ________ in the bedroom..
That boy is my good friend. _________ name is Mike.
—Where did you go last night? —Ito go to Li Lei’s birthday party.
—Have a nice time in the summer holiday! —.