Ⅱ.单项选择:(共15小题;每小题1分,满分15分)
21. There is a limit ___ how much I’m prepared to spend.
A. of B. for C. to D. with
22. The price of oil has _________ sharply to $12 a barrel.
A. risen B. raised C. been risen D. been raised
23. Mary has completed all her lessons and, with her paper _______, she should graduate next month.
21. There is a limit ___ how much I’m prepared to spend.
A. of B. for C. to D. with
22. The price of oil has _________ sharply to $12 a barrel.
A. risen B. raised C. been risen D. been raised
23. Mary has completed all her lessons and, with her paper _______, she should graduate next month.

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