Question 21: Helena ________ her assignment yet.
A. doesn’t B. has done C. hasn’t done D. did
Question 22: I like wearing ______ clothes when I’m at home, such as old jeans and T-shirts.
A. gaudy B. smart C. elegant D. scruffy
Question 23: My little sister is keen ________ reading picture-books in her free time.
A. in B. on C. of D. with
Question 24: If we have enough time, we _________ this topic more interestingly.
A. present B. would present C. will present D. presented
Question 25: Don't touch that book-shelf! It __________.
A. has just painted B. just painted
C. has just been painted D. just been painted