二、 单项填空（共20小题；每小题0.5分, 满分10分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
21. --- Has the little boy passed ___P.E test ?
--- He has tried twice , and the teacher will allow him to have ___third try .
A. the ; / B. a; the C. the ; a D. the ; the
22. His letter was so confusing that I could hardly make any ___ of it .
A. explanation B. meaning C. sense D. guess
23. Here are all the important papers for you to read, ___to us from European countries .
A. delivering B. delivered C. to deliver D. being delivered
24. The boy ___forward to ___a now bike.
A. referring to look, buying B. referred to looking, buy
C. referred to is looking, buying D. referring to is looking, buy
