几道英语题,高手进!!

My panrent' demand is the good use I__my spare time for my study of science and technology
A make from B make of C make out D make into
这题原题有问题。如果不改动原题，选项应该是 of才对,但是原题没有提供这一选项。
如果改，大概应该是这样：My panrent' demand is that I make good use of my spare time for my study of science and technology

Whether ___or not on the Mars is still a secret.
A there exists B the life exsts C it exists life D life is existed
这题选项有误，可能是楼主打错了，正确地选项应该是life exists。exist是个不及物动词，不用被动语态。whether引导主语从句，life指抽象的生命不要the。
I really love being able to help these men rebuild their lives and watch them ___what Ido for them.
A value B thank C appreciate D owe
这题应该选A！！！
做好事的目的不是为了图人家感谢，因为他说了“I really love being able to help these men rebuild their lives”，所以不能选C。
value的意思是“重视”。

没有把握最好不要过于热心。

B D C

1.B
make the good use of my spare time充分利用时间
这里把the good use提到了前面.
2.life exists
生命是否存在于火星是个密
whether引导了一个主语