急1.--- Bob must be very wealthy .

题目

急1.--- Bob must be very wealthy .
7.I am not the invigilator监考员here ;I ____until Mr.Smith comes .he is late.
A.just help you B .havejust helped out
C.am just helping out D.will just help out
8.Hurry up The plane _____.
A.starts B.has started C.is starting D.is going to start
9.---When will they leave
---They _____very soon .
A.do leave B.are leaving C.have left D.leave
10.I _____eighteen next month .
A.am to be B.am going to be C.will be D.can be
11.My father likes classical music .He _____to it in his spare time .
A.has listened B.listens C.listened D.is listening
12.The Williams moved to a safer area and since then they ____back to their past life .
A.haven`t looke B.didn`t look C.wouldn`t look D.hadn`t looked

答案

7C:因为前一句是现在进行时~所以后面那句也是~
8D:be going to do将来时~be doing有时也可以用现在进行时表示将来时~但不是所有单词都可以~start就不可以
9B：就是上面说的那种情况,用现在进行时表示将来时~leave是典型代表之一
10C:be to do表示已经计划好的,将要去做~be going to do 主要指应对当前情况将要发生的,没有计划的.will be就是一种将要发生的状态,没什么特别 呃
11B：用一般现在时表示常常做的事情~
12A：自从那以后就一直持续的动作,到现在可能任然再进行,所以不用D~since than是完成时的一种标志了~一般遇到都会用完成时的~