It is difficult for the students______ the homework on weekends.
--Where would you like to go for the coming vacation? --I’d like to go _______.
--Do you know the name of the cat ______ is lying on the ground? --Of course, it’s my pet. Its name is Mimi.
-- ________ your homework yet?-- Not yet. I _______ it.
-- Did you read a book about customs last week?-- Yes, I found ______ very useful to know the customs of foreign countries.
--You used to be quiet, ____you?--Yes, and I used to be very shy.