题目

If the building project ___ by the end of this month is delayed, the construction company ___ fined.   A. will be completed; is to be      B. to be completed; will be   C. being completed; will be   D. completed; was 答案：B化简：（1）（x+2）（x-1）-3x（x+3）（2）（a+3）（a2+9）（a-3）