-You’ve dropped __________ “s” in the word “across”.-Oh, you are right, __________ letter “s” should be doubled like this “cross”.
---Oh, how nice! A picture of the White House? ---Yes. I took it in ________.
---How was your school trip? ---It was ________ but a little bit tired.
---Kate, who is your favorite ________? ---Angelababy. She’s very lovely.
---What does your good friend look like? ---________.
---How long does it take you to finish your homework every day? ---I usually ________ two hours on it.