题目内容：

.单项选择,
要说清楚为什么那个要选,那个不能选.有什么句型的说下~1.After the rebuilding our school is becoming _________ A.more and more beautiful B.more beautiful and beautiful C.beautiful and beautiful D.the more beautiful 2.Mom will take me to Beijing if I _________ the exam.A.will do will in B.do well in C.did well in D.am do well in 3.The best friends should often help _________ A.others B.the others C.another D.each other 4--have you ever been to Beijing?--yes,l ___ there last year.A.went B.have gone C.have been D.am going 5.l am sorry you are missed the train.lt________10 minutes ago.A.left B.has left C.had left D.has been left 6.---can you guess if they _ to play basketball with us?---l think they will come if they _____ free.A.come;are B.will come ;will be C.will come ;are D.come ;will be