— The floor is dirty. Would you please _?— With pleasure.
)—Are your __________ workers (工人)?—No, .
—________ is the math book?—It’s in the bookcase.
)—Is this girl your sister?—_________.
)— Do Lucy and Lily have _________ tennis ball?— No, they don’t have one. They don’t like playing ______ tennis.
)There is______ “s” in the word “watches” and the underlined part is pronounced (发 音)as____.