.--Look, there are ______number of ducks swimming in the river.--Yes. ______number of them is over ten.
Mike often ________ to work by bike, but this morning he _________ to work.
—________ you listen to the news yesterday morning? —No, I ________.
—Did you do _________ last weekend? —Yes, I went to the zoo.
—_________ —It was very dry.
—Where is your sister? —She ________ my mom with cooking.