亟待解决的英语问题请高手帮帮忙！

请帮忙从语法的角度详解........谢谢~}.b Z g:N&bz!a
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-S@Jv#O,u-l9kH [size=2]1.__________a class meeting this afternoon.
m"Y1[6JU"yd A.there is going to have B.there is going to be
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M C.there will have D.there are going to have
\Z0Ji bFt 2.we________go to visit the factory with them. ,U0@.R:{!YU0@8`#y.g
A.don’t need B.need not to C.needn’t to D.needn’t 4~&\[N:r
4.every year some teachers in shanghai are_________to study abroad.
!j?+dh nJ5o:Rs A.sent B.taken C.brought D.gone
%?A4O5T cr 9.our teacher told us that light________faster than sound.
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?wKe"Z A.traveled B.would travel C.travels D.traveling
)y]$e1y^L 10.by the year 1990, jack________in the supermarket for ten years. :z"zE W3[ vC;z
A.has worked B.worked C.had worked D.was working &m{]-wzO,m
11.there_______-great changes in shanghai since 1978.
(`A|0Av-M3Vj A.has been B.have been C.had been D.had had [/size]

1.B 存在的有为there be,将来时为there's going to be,或there will be, 一般用there's going to be, 复数为there're going to be. have 是拥有，如：We are going to have a meeting this afternoon. AjH8c%]

gZ} f)Lh 2.D need 在此用作情态动词，not直接放在need后面，然后跟谓语动词原形，need 也可作实意动词，后跟不定式to do,则答案为don't need to .
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4.A send sb. to do sth.派某人去做某事，这儿用被动语态，be sent to表示被派往国外. )INCq-J(g3@

:m!`3C0l3r"[ 9.C 光速快于声速，属于客观真理，用一般现在时，且在宾语从句中不受主句时态的影响。 %~Ua$v2gJu0A

NV*j6v8}4k 10.C by+表示过去的时间点，表示从过去的过去到过去为止，用过去完成时。
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et8H K5\:P_Tm 11.B since用于现在完成时，这儿是there be 结构，changes 又是复数，所以是there have been