一些英语语法题~但不知道为什么选这个.

一些英语语法题~但不知道为什么选这个.
1 The exam is aimed to get a clear _A_ of students' knowledge and ability in Maths.
A picture B opinions C look D painting
2 The look on his face _A_ that something serious had happened to him.
A suggested B pointed C expressed D dissolved
3 It's helpful for one to _C_ a hobby after he or she retires.
A obey B occupy C follow Dgrasp
4.When I went into the room,I found him _B_ in a sofa,deep in thought.
A sat B seated C laying D seating
5._A_.the new building has 155 storeys.
A Altogether B Wholly C Entirely D Completely
6.A lot of foreigners have called to ask _C_the tuition of Shanghai High School International division.
A after B for C about D of
能回答多少就回答多少吧~