) 21. —How many _______ are there in the kitchen?
—Only two. www.51wuli.com
A. bag of rice B. bags of rice C. bags of rices
( ) 22. He has been here _______ he left his hometown.
A. since B. in C. for
( ) 23. Peter, there is someone in the office would like to speak with you.
A. who B. which C. whom
( ) 24. —Which is more useful, listening or speaking?
—I think _______ of them are useful.
A. none B. both C. all
( ) 25. Alice, please be quiet! The others _______ hear clearly.
A. can’t B. mustn’t C. shouldn’t
( ) 26. _______ fine weather it is! Let’s go swimming.
A. What a B. How C. What

( ) 27. —Tree Planting Day is coming. Do you plant trees in spring?
—Yes, many trees _______ in our city every year.
A. are planting B. are planted C. were planted
( ) 28. —I have a headache and a cough.
—_______ have you been like this?
A. How soon B. How long C. How often
( ) 29. —So wonderful! I have never heard _______ beautiful music. www.51wuli.com
—I agree.