Tìm x biết:

197 ≥ xx + xx < 199

VI.Combine these sentences using "but,and,because,so"            1.Tom won't come to the party tonight. Tom is busy                                 2.My sister writes dialy every night. My sister likes to write dialy.           VII.Change the sentences into passive voice                                          1.You can't park your car here                                                               2.Our teacher asked us to learn by heart all the historical events