I found ___________ difficult to make sounds like birds.
A. that B. that it is
C. it D. it is
— Isn’t that book so boring?
—___________. You can know a lot about wild animals.
A. Yes, you are right B. I’m afraid so
C. Not at all D. Of course
Tell Tom ___________ speak when watching the birds.
A. to try to B. try not to
C. not try to D. to try not to
The woman does some cleaning every day, because she wants to keep the house_____________.
A. clean B. cleaning
C. from cleaning D. cleans
He went carefully through his homework_____________make mistakes.
A. so that B. in order to
C. in order not to D. in order to not
_____________ advice you gave me yesterday!
A. How useful B. What useful
C. What a useful D. How a useful
